Processing guide limiting device

Abstract

The utility model relates to the technical field of hole system processing, specifically relates to a kind of guiding limiting device for processing, and the guiding limiting device is located on main shaft unit, and the main shaft unit includes frame body and main shaft, the main shaft is fixedly connected with frame body and the one end of main shaft is equipped with tool body, the guiding limiting device includes guide sleeve, guide shaft and stopper, the guide sleeve is worn in guide shaft outer and is equipped on frame body, the one end between guide shaft and frame body is equipped with elastic component, the other end is fixedly connected with stopper, the stopper is located the one end of main shaft equipped with tool body, along the processing direction of tool body, stopper can be contacted with workpiece;The elastic component can be compressed to the abutment of guide shaft and frame body.The guiding limiting device of utility model can limit the travel of tool body when the processing depth of hole system reaches the set value, and further guarantee the processing accuracy of hole system depth.

Description

Technical Field

[0001] This utility model relates to the technical field of hole processing, specifically to a guiding and limiting device for processing. Background Technology

[0002] In scenarios involving precision boring or turning of holes, the tool body and workpiece are easily affected by various interference factors during the machining process, such as positioning deviation, workpiece vibration, and tool wear. These factors can all cause the machining accuracy of the hole depth to deviate from the preset standard.

[0003] In actual production, in order to ensure the machining accuracy of hole depth, operators often need to frequently stop the machine, use measuring tools to detect the hole depth in real time, and adjust the tool position according to the measurement results. This practice not only reduces machining efficiency, but may also introduce new positioning errors due to repeated adjustments, thereby further aggravating the fluctuation of the machining accuracy of hole depth. Summary of the Invention

[0004] This invention addresses the problem of poor control over the machining accuracy of hole depth in existing technologies by providing a guiding and limiting device for machining. This guiding and limiting device can limit the movement of the cutting tool when the machining depth of the hole reaches a set value, thereby ensuring the machining accuracy of the hole depth.

[0005] The technical solution of this utility model is: a guiding and limiting device for machining, wherein the guiding and limiting device is disposed on a spindle unit, the spindle unit includes a frame and a spindle, the spindle is fixedly connected to the frame and one end of the spindle is provided with a tool body, the guiding and limiting device includes a guide sleeve, a guide shaft and a stop block, the guide sleeve passes through the guide shaft and is disposed on the frame, one end of the guide shaft is provided with an elastic component between it and the frame, and the other end is fixedly connected to the stop block, the stop block is located at the end of the spindle where the tool body is located, and along the machining travel direction of the tool body, the stop block can contact the workpiece; the elastic component can be compressed until the guide shaft abuts against the frame.

[0006] With the above scheme, the stop is located at the end of the spindle where the tool body is located. When the tool body performs boring or turning operations on the hole system along the machining direction, as the machining depth of the hole system gradually increases, the stop will gradually approach the workpiece until it contacts the workpiece. At this time, as the tool body continues to travel along the machining direction, the stop will apply a force in the opposite direction to the spindle. Due to the obstruction of the workpiece, the stop will drive the guide shaft to compress the elastic component, so that the rigid obstruction of the stop on the spindle is transformed into a progressive buffer resistance until the end of the guide shaft abuts against the frame, thereby limiting the travel of the spindle and ensuring the accuracy of the machining depth of the hole system.

[0007] Based on the above solution, the present invention can be further improved as follows: Furthermore, the elastic deformation direction of the elastic component is consistent with the length direction of the guide shaft, so that the buffering force of the elastic component can be concentrated on the axial direction of the guide shaft, avoiding the guide shaft from shifting or jamming due to the occurrence of lateral force.

[0008] Furthermore, the elastic component includes grooves respectively formed on the frame and the guide shaft, the length direction of the groove is consistent with the length direction of the guide shaft, and an elastic element is provided in the groove, one end of the elastic element is fixedly connected to the guide shaft and the other end is fixedly connected to the frame.

[0009] Furthermore, the elastic element is a spring.

[0010] Furthermore, the length direction of the guide sleeve and guide shaft is consistent with the length direction of the main shaft, ensuring that the guide shaft moves along the travel direction of the main shaft.

[0011] Furthermore, a limiting block is provided on the guide shaft between the guide sleeve and the frame to prevent the guide shaft from detaching from the guide sleeve.

[0012] Furthermore, at least one guide limiting device is provided along the outer periphery of the spindle, and when there are at least two guide limiting devices, they are evenly distributed along the outer periphery of the spindle, thereby constraining the spindle from different radial directions and thus minimizing the wobble of the tool body during processing.

[0013] The beneficial effects of this utility model through the above technical solution are as follows: In this invention, when the tool body performs boring or turning operations on the hole system along the machining direction, as the machining depth of the hole system gradually increases, the stop will gradually approach the workpiece until it contacts the workpiece. At this time, as the tool body continues to move along the machining direction, the stop will apply a force in the opposite direction to the spindle. Furthermore, due to the obstruction of the workpiece, the stop will drive the guide shaft to compress the elastic component, so that the rigid obstruction of the stop on the spindle gradually transforms into a progressive buffer resistance, prolonging the time for the stop to exert resistance on the spindle until the end of the guide shaft abuts against the frame, thereby limiting the movement of the spindle. This not only ensures the accuracy of the machining depth of the hole system, but also minimizes the decrease in the dimensional accuracy or surface finish of the hole system caused by vibrations generated by the spindle being subjected to instantaneous rigid impacts. Attached Figure Description

[0014] Figure 1 This is a diagram showing the usage state of this utility model; Figure 2 This is one of the enlarged views of the guide limiting device in this utility model (the guide shaft is in the pop-out state); Figure 3 This is the second enlarged view of the guide and limiting device in this utility model (the guide shaft is in the working state). Figure 4 This is a schematic diagram showing the distribution of the guide and limiting device in this utility model.

[0015] The reference numerals in the attached diagram are: 1. Spindle unit, 101. Frame, 102. Spindle, 103. Tool body; 2. Guide sleeve, 3. Guide shaft, 4. Stop block, 5. Workpiece, 6. Groove, 7. Elastic component, 8. Limit block. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1-4 As shown, a machining guide and limiting device is mounted on a spindle unit 1. The spindle unit 1 includes a frame 101 and a spindle 102. The spindle 102 is fixedly connected to the frame 101, and a tool body 103 is provided at one end of the spindle 102. The guide and limiting device includes a guide sleeve 2, a guide shaft 3, and a stop block 4. The guide sleeve 2 passes through the guide shaft 3 and is mounted on the frame 101. An elastic component is provided between one end of the guide shaft 3 and the frame 101. The other end is fixedly connected to the stop 4. The elastic component can be compressed until the guide shaft 3 abuts against the frame 101. The stop 4 is located at the end of the spindle 102 where the tool body 103 is located. Along the machining direction of the tool body 103, that is, when the tool body 103 performs boring or turning machining on the hole system along the machining direction, as the machining depth of the hole system gradually increases, the stop 4 will gradually approach the workpiece 5 until it contacts the positioning surface of the workpiece 5 (at this time, the guide shaft 3 is in the pop-out state, such as...). Figure 2 As shown), as the tool body 103 continues to travel along the machining direction, the stop 4 applies a force in the opposite direction to the spindle 102. Because the workpiece 5 blocks the stop 4, it causes the guide shaft 3 to compress the elastic component, transforming the rigid block 4's resistance to the spindle 102 into a progressive buffer resistance, until the end of the guide shaft 3 abuts against the frame 101 (as shown). Figure 3 As shown in the figure, the travel of the spindle 102 is limited, which not only ensures the accuracy of the hole machining depth, but also avoids the decrease in hole size accuracy or surface finish caused by vibration caused by instantaneous rigid impact on the spindle 102.

[0017] In this embodiment, the connection between the stop block 1 and the guide shaft 3 can be detachable. By replacing the stop block 1 with different thicknesses, the hole system processing limit of different depths can be achieved. The inner wall of the guide sleeve 2 is provided with a grid-type lubrication oil path, which can ensure its sliding fit with the guide sleeve 2.

[0018] In this embodiment, the spindle 102 is powered by a power unit, specifically a motor, and works in conjunction with a frequency converter. When the end of the guide shaft 3 comes into contact with the frame 101, the spindle 102 is obstructed and the motor load increases instantaneously. At this time, the frequency converter can detect the motor output overload by monitoring the changes in the motor current or torque in real time. The frequency converter converts the overload signal into an electrical signal and transmits it to the control system. The control system then controls the motor to drive the spindle 102 to move in the opposite direction of the machining direction (i.e., retract the tool), thereby enabling the machining termination and reset actions to be completed while ensuring the machining accuracy of the hole depth.

[0019] As one possible implementation, the elastic deformation direction of the elastic component is consistent with the length direction of the guide shaft 3, so that the buffering force of the elastic component can be concentrated on the axial direction of the guide shaft 3, avoiding the guide shaft 3 from shifting or getting stuck due to the occurrence of lateral force.

[0020] As one possible implementation, the elastic component includes a groove 6 respectively opened on the frame 101 and the guide shaft 3. The length direction of the groove 6 is consistent with the length direction of the guide shaft 3, and an elastic element 7 is provided in the groove 6. One end of the elastic element 7 is fixedly connected to the guide shaft 3, and the other end is fixedly connected to the frame 101.

[0021] As one possible implementation, the elastic element 7 is a spring.

[0022] As one possible implementation, the length direction of the guide sleeve 2 and the guide shaft 3 is consistent with the length direction of the main shaft 102, ensuring that the guide shaft 3 moves axially along the travel direction of the main shaft 102.

[0023] As one possible implementation, a limiting block 8 is provided on the guide shaft 3 between the guide sleeve 2 and the frame 101 to prevent the guide shaft 3 from detaching from the guide sleeve 2.

[0024] As one possible implementation, at least one guide limiting device is provided along the outer periphery of the main shaft 102, and when there are at least two guide limiting devices, they are evenly distributed along the outer periphery of the main shaft 102, so as to constrain the main shaft 102 from different radial directions, thereby minimizing the wobble of the tool body 103 during the machining process.

[0025] In this embodiment, two guide limiting devices are provided along the outer periphery of the main shaft 102, such as... Figure 4 As shown.

[0026] In this embodiment, when used: Initially, guide shaft 3 is in the pop-out state (e.g., Figure 2As shown), when the tool body 103 performs boring or turning operations on the hole system along the machining direction, as the machining depth of the hole system gradually increases, the stop 4 will gradually approach the workpiece 5 until it contacts the positioning surface of the workpiece 5. As the tool body 103 continues to travel along the machining direction, under the obstruction of the workpiece 5, the stop 4 will drive the guide shaft 3 to compress the elastic component until the end of the guide shaft 3 abuts against the frame 101 (as shown). Figure 3 As shown), the travel of the spindle 102 is limited. At this time, the frequency converter can detect motor output overload by monitoring the changes in motor current or torque in real time. The frequency converter converts the overload signal into an electrical signal and transmits it to the control system. The control system then controls the motor to drive the spindle 102 to travel in the opposite direction of the machining travel direction (i.e., retract the tool), thereby completing the machining of the hole system.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present invention without departing from the spirit of the present invention or the scope of disclosure shall fall within the protection scope of the present invention.

Claims

1. A machining guide and limiting device, wherein the guide and limiting device is disposed on a spindle unit (1), the spindle unit (1) includes a frame (101) and a spindle (102), the spindle (102) is fixedly connected to the frame (101) and one end of the spindle (102) is provided with a tool body (103), characterized in that, The guide limiting device includes a guide sleeve (2), a guide shaft (3), and a stop (4). The guide sleeve (2) passes through the guide shaft (3) and is mounted on the frame (101). One end of the guide shaft (3) is connected to the frame (101) with an elastic component, and the other end is fixedly connected to the stop (4). The stop (4) is located at one end of the spindle (102) with a cutter body (103). Along the machining direction of the cutter body (103), the stop (4) can contact the workpiece (5). The elastic component can be compressed until the guide shaft (3) abuts against the frame (101).

2. The processing guide and limiting device according to claim 1, characterized in that, The elastic deformation direction of the elastic component is consistent with the length direction of the guide shaft (3).

3. The processing guide and limiting device according to claim 2, characterized in that, The elastic component includes a groove (6) respectively opened on the frame (101) and the guide shaft (3). The length direction of the groove (6) is consistent with the length direction of the guide shaft (3), and an elastic element (7) is provided in the groove (6). One end of the elastic element (7) is fixedly connected to the guide shaft (3), and the other end is fixedly connected to the frame (101).

4. The processing guide and limiting device according to claim 3, characterized in that, The elastic element (7) is a spring.

5. The machining guide and limiting device according to any one of claims 1 to 4, characterized in that, The length direction of the guide sleeve (2) and the guide shaft (3) is consistent with the length direction of the main shaft (102).

6. The machining guide and limiting device according to any one of claims 1 to 4, characterized in that, A limiting block (8) is provided on the guide shaft (3) between the guide sleeve (2) and the frame (101).

7. The processing guide and limiting device according to claim 5, characterized in that, At least one guide limiting device is provided along the outer periphery of the main shaft (102), and when there are at least two guide limiting devices, they are evenly distributed along the outer periphery of the main shaft (102).

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