An angle precision adjusting mechanism for super-precision tool holder

Abstract

This utility model discloses an ultra-precise tool holder angle adjustment mechanism, relating to the field of tool holder adjustment technology. The utility model includes a mounting bracket, a positioning column, a turntable, a tool holder, an adjusting bolt, and an angle encoder. The adjusting gear at the front end of the adjusting bolt extends into the fixed base and has an end that meshes with a gear ring. The transmission gear at the front end of the angle encoder meshes with the gear ring, and the angle encoder is connected to a PLC controller. During the rotation of the turntable, this utility model enables the angle encoder to generate a position signal that is transmitted to the PLC controller, and the angle value is displayed on the screen. The accuracy can reach 0.1 degrees, and it has a highly efficient visual display, thus achieving higher adjustment precision.

Description

Technical Field

[0001] This utility model belongs to the field of tool holder adjustment technology, and in particular relates to an ultra-precise tool holder angle adjustment mechanism. Background Technology

[0002] The raceway of a tapered roller bearing is a tapered curved surface. The cutting tool head needs to be adjusted according to the actual cone angle of the raceway. This angle is generally 10° to 30° to ensure full contact between the grinding stone or grinding wheel and the raceway surface, and to avoid machining defects caused by uneven local pressure.

[0003] During machining, machine tool vibration, tool wear, or workpiece misalignment may cause angular deviations. The adjustment mechanism corrects these deviations through fine adjustments to ensure machining accuracy. Different bearing models have significantly different raceway tapers, requiring the adjustment mechanism to have a wide range of adjustability. (See attached diagram in the instruction manual.) Figure 1 As shown, the traditional tool head adjustment structure uses a mechanical pointer and scale to set the angle. The scale division is approximately 1 degree, resulting in poor accuracy and failing to meet the requirements of high-precision machining. Therefore, to address these issues, this solution proposes an ultra-precision tool holder angle adjustment mechanism. Utility Model Content

[0004] This invention provides an ultra-precise tool holder angle adjustment mechanism. An adjusting bolt and an angle encoder are respectively installed on the side of the fixed base. The ends of the adjusting bolt and the angle encoder's transmission rods extend into the fixed base and mesh with a gear ring on the surface of the turntable inside the fixed base via gears. The angle encoder is connected to a PLC controller with a display screen, which displays the angle information in real time. By adjusting the rotation of the adjusting screw end, the turntable can be driven to rotate synchronously, causing the tool holder at the bottom of the turntable to rotate by the same angle. During the turntable rotation, the angle encoder generates a position signal that is transmitted to the PLC controller, and the angle value is displayed on the screen. The accuracy can reach 0.1 degrees, thus achieving higher adjustment precision. In summary, this invention solves the problems in the background technology.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model discloses an ultra-precision tool holder angle adjustment mechanism, which includes a mounting bracket with a fixed base, a positioning column installed in the bottom cavity of the fixed base, a turntable that supports and is sleeved on the positioning column, a tool holder fixedly installed at the bottom of the turntable, an adjustment bolt installed on the side of the fixed base, and an angle encoder.

[0007] The turntable surface is surrounded by a toothed ring, and the adjusting bolt is fixedly installed on the side of the fixed base by the first fixing block. The adjusting bolt extends into the fixed base and has an adjusting gear at its end that meshes with the toothed ring. The lower part of the first fixing block is provided with a pointer that corresponds to the scale ring on the lower side of the turntable.

[0008] The angle encoder is fixedly installed on the side of the fixed base by the second fixing block, and the angle encoder is provided with a transmission rod. The transmission rod extends into the fixed base and has a transmission gear at its end that meshes with the gear ring. The angle encoder is connected to the PLC controller.

[0009] Furthermore, both the first fixing block and the second fixing block are fixed by connecting them to the fixing holes on the side of the fixing seat with bolts. The side of the fixing seat is provided with a first mounting hole and a second mounting hole that match the rotating sleeve of the adjusting bolt and the rotating sleeve of the transmission rod, respectively.

[0010] Furthermore, the PLC controller is connected to a display screen to display angle information.

[0011] The present invention has the following advantages over the prior art:

[0012] High adjustment precision: The fixed base of this mechanism is equipped with an adjustment bolt and an angle encoder. The ends of the adjustment bolt and the transmission rod of the angle encoder extend into the fixed base and mesh with the gear ring on the surface of the turntable inside the fixed base through gears. The angle encoder is connected to a PLC controller with a display screen and displays the angle information in real time. By adjusting the rotation of the end of the adjustment screw, the turntable can be driven to rotate synchronously, and the tool holder at the bottom of the turntable can be rotated by the same angle. During the rotation of the turntable, the angle encoder can generate a position signal and transmit it to the PLC controller, and display the angle value on the display screen. The accuracy can reach 0.1 degrees, and it has a highly efficient visual display, thus achieving higher adjustment precision.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the adjustment structure of a traditional cutting tool head;

[0016] Figure 2This is a structural schematic diagram of the ultra-precision tool holder angle adjustment mechanism of this utility model;

[0017] Figure 3 for Figure 2 Exploded structural diagram;

[0018] Figure 4 This is a bottom-view diagram of the fixed mount;

[0019] Figure 5 for Figure 2 Vertical cross-sectional view based on the middle position;

[0020] Figure 6 for Figure 2 A cross-sectional view based on the intermediate position;

[0021] Figure 7 This is a schematic diagram of the ultra-precision tool post angle adjustment mechanism in use.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1-Mounting bracket, 11-Fixed base, 111-First mounting hole, 112-First fixing block, 113-Cavity, 12-First fixing block, 13-Adjusting bolt, 131-Adjusting gear, 14-Pointer, 2-Scale ring, 21-Turntable, 22-Gear ring, 23-Positioning pin, 3-Angle encoder, 31-Second fixing block, 32-Transmission gear, 4-Tool holder, 5-Air pump, 51-Connecting plate, 52-Air pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "inner", "bottom", "side", "surface", "surround", "lower", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] like Figure 1The diagram shows a traditional tool head adjustment structure. The tool head angle is set by a mechanical pointer and scale, with the scale division being approximately 1 degree, resulting in poor accuracy and failing to meet high machining precision requirements. Therefore, this technical solution is proposed.

[0027] Please see Figure 2-7 As shown, this utility model discloses an ultra-precise tool holder angle adjustment mechanism, comprising a mounting frame 1 with a fixed base 11, a positioning column 23 installed in the bottom cavity 113 of the fixed base 11, a turntable 21 supported and sleeved on the positioning column 23, a tool holder 4 fixedly installed at the bottom of the turntable 21, an adjusting bolt 13 and an angle encoder 3 installed on the side of the fixed base 11; the mounting frame 1 is used to install on components such as robotic arms, robotic hands, or fixed frames, and is fixed by bolts; the fixed base 11 is located at the lower part of the mounting frame 1, and a connecting plate 51 is fixedly installed on it by bolts. An air pump 5 is vertically connected to the connecting plate 51, and the air outlet of the air pump 5 is connected to the inner cavity of the connecting plate 51. The connecting plate 51 is provided with an air outlet with an air valve, and the air outlet is connected to the pneumatic component of the bottom tool holder 4 through an air pipe 52; in this solution, the air pump 5, the connecting plate 51, the tool holder 4 and the air pipe 52 are the same as those in the prior art, and the specific principles and detailed structures are not described in this solution.

[0028] The problem this solution aims to solve is improving the accuracy of tool holder angle adjustment;

[0029] A toothed ring 22 is arranged around the surface of the turntable 21. An adjusting bolt 13 is fixedly installed on the side of the fixed base 11 through the first fixing block 12. The adjusting bolt 13 extends into the fixed base 11 and has an adjusting gear 131 at its end that meshes with the toothed ring 22. A pointer 14 corresponding to the scale ring 2 on the lower side of the turntable 21 is provided at the lower part of the first fixing block 12.

[0030] Angle encoder 3 is fixedly installed on the side of fixed base 11 by second fixed block 31, and angle encoder 3 is provided with transmission rod, which extends into fixed base 11 and has transmission gear 32 at the end that meshes with gear ring 22. Angle encoder 3 is connected to PLC controller. Angle encoder 3 is existing technology. It can directly output the value of angle change and display it on the display screen by PLC controller. It is well known to those skilled in the art. Therefore, the specific principle and structure will not be described in detail.

[0031] Both the adjusting gear 131 and the transmission gear 32 are bevel gears with a deviation within ±0.01mm; both the gear ring 22 and the gear ring adopt the 6th grade precision of GB / T10059.1-201 standard.

[0032] Among them, such as Figure 3As shown, the first fixing block 12 and the second fixing block 31 are fixed by connecting them to the fixing holes on the side of the fixing seat 11 with bolts. The side of the fixing seat 11 is provided with a first mounting hole 111 and a second mounting hole 112 that match the rotating sleeve of the adjusting bolt 13 and the rotating sleeve of the transmission rod, respectively.

[0033] The PLC controller is connected to the display screen to show angle information.

[0034] The working principle of this technical solution is as follows:

[0035] Rotating the adjusting bolt 13 with a suitable wrench causes the gear ring 22 to rotate via the adjusting gear 131, resulting in a synchronous rotation of the tool holder 4. This ensures that the angle matches the tapered surface of the raceway of the tapered roller bearing. During this process, the gear ring 22 drives the transmission gear 32, causing the angle encoder 3 to generate a position signal, which is then sent to the PLC and displayed on the screen. The accuracy can reach 0.1 degrees, and it offers real-time visibility, enabling high-precision adjustments. Ultimately, this results in a more accurate machining angle for the tool holder 4. The entire device is compact, stable, and allows for rapid adjustment and high precision, effectively improving machining quality.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A precision tool holder angle adjustment mechanism, characterized in that, It includes a mounting bracket (1) with a fixed base (11), a positioning column (23) installed in the bottom cavity (113) of the fixed base (11), a turntable (21) that carries and is sleeved on the positioning column (23), a tool holder (4) fixedly installed at the bottom of the turntable (21), an adjusting bolt (13) installed on the side of the fixed base (11), and an angle encoder (3); The turntable (21) is surrounded by a toothed ring (22). The adjusting bolt (13) is fixedly installed on the side of the fixed base (11) by the first fixing block (12). The adjusting bolt (13) extends into the fixed base (11) and its end is provided with an adjusting gear (131) that meshes with the toothed ring (22). The lower part of the first fixing block (12) is provided with a pointer (14) corresponding to the scale ring (2) on the lower side of the turntable (21). The angle encoder (3) is fixedly installed on the side of the fixed base (11) by the second fixing block (31), and the angle encoder (3) is provided with a transmission rod, which extends into the fixed base (11) and has a transmission gear (32) at the end that meshes with the gear ring (22). The angle encoder (3) is connected to the PLC controller.

2. The ultra-precision tool holder angle adjustment mechanism according to claim 1, characterized in that, The first fixing block (12) and the second fixing block (31) are fixed by connecting to the fixing holes on the side of the fixing seat (11) with bolts. The side of the fixing seat (11) is provided with a first mounting hole (111) and a second mounting hole (112) that match the rotating sleeve of the adjusting bolt (13) and the rotating sleeve of the transmission rod, respectively.

3. The ultra-precision tool holder angle adjustment mechanism according to claim 1, characterized in that, The PLC controller is connected to the display screen to show angle information.

Images