A precision in-place detection system for a spindle tool

Abstract

The utility model discloses a main shaft cutter precision's in -position detection system, include: main shaft head, the bottom of main shaft head is provided with main shaft taper hole, the top of main shaft taper hole extends to the inside of main shaft head near the position of top department, a plurality of air -tight detection hole, the utility model has the following beneficial effect: through main shaft head, cooperation air -tight detection hole inside air -tight sensor, realize four miniature air -tight detection hole even distribution on the detection end of main shaft head, and through air -tight sensor, four air -tight detection hole inside is guided into compressed gas, when handle and main shaft head are well pasted, the pressure value that air -tight sensor detected will synchronous rise, and four air -tight sensor's pressure value is equal basically, if the pressure of arbitrary air -tight detection hole reaches the set value, or four pressure values exist remarkable difference, then show handle failed to be in position completely, exist clamp iron scrap, skew or clamping not firm phenomenon, realize to handle in -position state carries out real -time detection.

Description

Technical Field

[0001] This utility model relates to the field of spindle tool positioning detection, and in particular to a precision positioning detection system for spindle tools. Background Technology

[0002] In the field of machining, automatic tool changing systems for CNC machine tools and machining centers have become the mainstream configuration. However, during the tool holder clamping process, if there are impurities such as iron filings or aluminum filings inside the spindle taper hole, these impurities will be trapped between the spindle taper hole and the tool holder taper surface, which can easily lead to tool tilting, spindle runout, and incomplete clamping, seriously affecting machining accuracy and even causing workpiece scrap. Moreover, most machine tool equipment currently uses proximity switches or photoelectric sensors to detect whether the tool is in place. However, the detection accuracy of these sensing methods is low, and they can generally only detect gaps of more than 0.2mm. For high-precision parts machining, even a slight offset of the tool holder can cause the machining features to exceed tolerances, making it difficult to meet the stringent requirements of high-end customers for machining dimensions and geometric tolerances.

[0003] Therefore, a precise positioning detection system for spindle tools is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a precision positioning detection system for spindle tools, solving the problem that current machine tools are not convenient for detecting whether the tools are installed and positioned correctly.

[0005] To achieve this objective, the present invention adopts the following technical solution: A precision positioning and detection system for a spindle tool, comprising: A spindle head, wherein a spindle tapered hole is provided at the bottom of the spindle head, and the top of the spindle tapered hole extends into the interior of the spindle head near the top. Multiple airtightness detection holes are provided at the bottom of the spindle head. The multiple airtightness detection holes are spaced apart along the center point of the spindle tapered hole. An airtightness sensor is installed inside each of the multiple airtightness detection holes.

[0006] Furthermore, the number of airtightness detection holes is set to four, and the four airtightness detection holes are located at the four corners of the bottom of the spindle head.

[0007] Furthermore, the bottom of the spindle head is configured as a detection end, and the airtightness detection hole and the spindle tapered hole are located on the detection end.

[0008] Furthermore, the bottom of the spindle head is provided with a tool holder, the top part of which is inserted into the interior of the spindle tapered hole, and the outer edge of the top of the tool holder is attached to the airtightness detection hole.

[0009] Furthermore, the spacing between each of the airtightness detection holes is 90°.

[0010] Furthermore, a plurality of air holes are provided on the outer surface of the spindle head near the top, and the plurality of air holes are connected to the spindle tapered hole.

[0011] Furthermore, a spindle housing is provided on the top of the spindle head.

[0012] Furthermore, the top of the spindle housing is provided with two Z-axis moving gauges.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By using the spindle head and the airtight sensor inside the airtightness detection hole, four miniature airtightness detection holes are evenly distributed on the detection end of the spindle head. Compressed gas is introduced into the four airtightness detection holes through the airtightness sensor. When the tool holder is well attached to the spindle head, the pressure value detected by the airtightness sensor will rise synchronously, and the pressure values ​​of the four airtightness sensors will be basically equal. If the pressure of any airtightness detection hole does not reach the set value, or if there is a significant difference between the four pressure values, it indicates that the tool holder is not fully in place, and there is a problem of metal chips being trapped, skew, or insecure clamping. This allows for real-time detection of the tool holder's positioning status.

[0014] 2. By using the spindle head and the air blow hole, air can be blown into the spindle taper hole or the air blow hole when the tool holder is not installed inside the spindle head. This blows out impurities such as iron filings and aluminum filings inside the spindle taper hole, making it easier to install the tool holder onto the spindle head later. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0016] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0017] Figure 1 This is a frontal view of the entire structure. Figure 2 This is a schematic diagram showing the overall view from below. Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0018] Illustration: 1. Spindle box; 2. Spindle head; 3. Inspection end; 4. Air blow hole; 5. Tool holder; 6. Z-axis moving gauge; 7. Air tightness inspection hole. Detailed Implementation

[0019] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below 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 scope of protection of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] This utility model embodiment provides a precision positioning detection system for spindle tools. Please refer to [link / reference]. Figures 1-3 It includes: a spindle head 2 and multiple air tightness detection holes 7. A spindle tapered hole is opened at the bottom of the spindle head 2, and the top of the spindle tapered hole extends to the inside of the spindle head 2 near the top. Multiple air tightness detection holes 7 are opened at the bottom of the spindle head 2, and the multiple air tightness detection holes 7 are spaced apart along the center point of the spindle tapered hole. An air tightness sensor is installed inside each of the multiple air tightness detection holes 7.

[0023] like Figures 1-3As shown, the spindle head 2 is the core load-bearing component of the entire positioning and detection system, providing the mounting base for other structures. The spindle taper hole is opened at the bottom of the spindle head 2 and extends into the interior of the spindle head 2 near the top. Its function is to install the tool holder 5, providing precise positioning and a stable connection for the tool holder 5, ensuring that the tool holder 5 will not shake or shift during high-speed rotation and other working processes, thereby ensuring the accuracy of tool processing.

[0024] Multiple airtightness detection holes 7 are provided at the bottom of the spindle head 2, spaced apart along the center point of the spindle taper hole. These airtightness detection holes 7 provide installation positions for airtightness sensors. The airtightness sensors can detect changes in air pressure within the airtightness detection holes 7 and determine whether the tool holder 5 is correctly positioned by measuring these changes. When the tool holder 5 is correctly installed, it will affect the air pressure around the airtightness detection holes 7. The airtightness sensors convert this air pressure change into an electrical signal output. By using multiple airtightness detection holes 7 and installing airtightness sensors, the positioning of the tool holder 5 can be detected from multiple positions, improving the accuracy and reliability of the detection. Compared with a single detection point, multi-position detection can effectively avoid misjudgments caused by local anomalies (such as unevenness of the tool holder 5 surface or blockage of the airtightness detection holes 7), ensuring that the tool holder 5 can be accurately determined to be correctly installed.

[0025] Specific operating process: When the tool holder 5 is not installed, the airtightness detection hole 7 at the bottom of the spindle head 2 is open to the outside atmosphere. The airtightness sensor detects normal atmospheric pressure and transmits the corresponding electrical signal to the control system. The control system determines that the tool holder 5 is not in place at this time, and inserts the top part of the tool holder 5 into the spindle tapered hole. As the tool holder 5 is inserted, the outer edge of the top of the tool holder 5 gradually fits into the airtightness detection hole 7. When the tool holder 5 is completely and correctly installed, a relatively sealed space is formed between the tool holder 5, the spindle tapered hole, and the airtightness detection hole 7. At this time, the air pressure in the airtightness detection hole 7 will change (for example, if there is a ventilation device in the system, the air pressure may increase due to the formation of the sealed space, or the air pressure may differ from the outside due to the seal blocking air circulation). The airtight sensor detects the air pressure change in the airtight detection hole 7 in real time and converts the air pressure change into an electrical signal, which is then transmitted to the control system. The control system analyzes and judges the received electrical signal. If the electrical signal is within the preset value range when the tool holder 5 is correctly positioned, it is determined that the tool holder 5 is in place and the system can proceed to the next processing operation. If the electrical signal is not within the preset value range, it is determined that the tool holder 5 is not in place and the system issues an alarm to prompt the operator to check the installation of the tool holder 5.

[0026] Please see Figure 3 The number of airtightness detection holes 7 is set to four. The four airtightness detection holes 7 are located at the four corners of the bottom of the spindle head 2. The bottom of the spindle head 2 is set as the detection end 3. The airtightness detection holes 7 and the spindle tapered hole are set on the detection end 3.

[0027] like Figure 3 As shown, the four airtightness detection holes 7 can detect the positioning of the tool holder 5 from multiple directions. During the installation of the tool holder 5 into the spindle taper hole, the detection holes at different positions can capture multi-dimensional information about the contact state between the tool holder 5 and the spindle head 2. For example, when the tool holder 5 is slightly tilted or partially misaligned, the air pressure changes at different detection holes will be different. By comprehensively analyzing the data from the four detection holes, the positioning state of the tool holder 5 can be judged more comprehensively and accurately. Setting the airtightness detection holes 7 at the four corners can make full use of the space layout at the bottom of the spindle head 2, so that the detection points are evenly distributed around the tool holder 5. This layout can cover the contact area between the tool holder 5 and the spindle head 2 to the greatest extent and avoid detection blind spots. No matter what direction the tool holder 5 is offset or misaligned during installation, the air pressure change can be detected by at least one detection hole.

[0028] Designating the bottom of the spindle head 2 as the detection end 3 clearly defines the functional area of ​​the spindle head 2, concentrating the detection-related structures and functions at the bottom. This design facilitates system integration and maintenance. During installation and debugging, operators can more easily operate and inspect the detection end 3, improving work efficiency. Integrating the airtightness detection hole 7 and the spindle taper hole into the detection end 3 allows for a tighter integration of the tool holder 5 installation and detection process. When the tool holder 5 is inserted into the spindle taper hole, its top outer edge can directly contact the airtightness detection hole 7, thus reflecting the positioning status of the tool holder 5 in real time. This integrated design reduces system complexity and footprint, improving the overall system performance.

[0029] Please see Figure 1 and Figure 3 The bottom of the spindle head 2 is provided with a tool holder 5. The top part of the tool holder 5 is inserted into the spindle tapered hole, and the outer edge of the top of the tool holder 5 is attached to the airtightness detection hole 7.

[0030] like Figure 1 and Figure 3 As shown, the tool holder 5 is a key component connecting the spindle head 2 and the cutting tool. It plays a role in transmitting power and motion. The spindle head 2 rotates to drive the tool holder 5 to rotate, thereby enabling the cutting tool mounted on the tool holder 5 to perform cutting operations. At the same time, the tool holder 5 also plays a role in positioning the cutting tool, ensuring that the cutting tool can accurately reach the predetermined machining position during the machining process.

[0031] The spindle taper has a specific taper. After the top of the tool holder 5 is inserted into the spindle taper, the tool holder 5 can be accurately positioned on the spindle head 2 through the cooperation of the taper surface. This positioning method can ensure that the center line of the tool holder 5 coincides with the center line of the spindle head 2, thereby ensuring the correct position and movement trajectory of the tool during the machining process.

[0032] When the tool holder 5 is correctly installed, its top outer edge fits into the airtightness detection hole 7, which changes the air pressure state inside the airtightness detection hole 7. The airtightness sensor can monitor this air pressure change in real time and convert it into an electrical signal to be transmitted to the control system, thereby realizing the detection of the tool holder 5's positioning.

[0033] Please see Figure 3 The spacing between each airtightness test hole 7 is 90°.

[0034] like Figure 3 As shown, the airtightness detection holes 7 are evenly distributed at 90° intervals at the bottom of the spindle head 2, forming multiple evenly distributed detection points in the surrounding area where the spindle head 2 contacts the tool holder 5. This layout can comprehensively and evenly monitor the airtightness between the tool holder 5 and the spindle head 2, ensuring that there are no blind spots in the detection of the tool holder 5's positioning. The airtightness detection holes 7 at different positions can detect air pressure changes in different directions. Since there may be slight deviations or loosening in various directions during the installation of the tool holder 5, the airtightness detection holes 7 at 90° intervals can obtain information from multiple angles, more accurately determine the installation status of the tool holder 5, and improve the reliability and accuracy of the detection.

[0035] Please see Figure 1 Multiple air holes 4 are provided on the outer surface of the spindle head 2 near the top, and the multiple air holes 4 are connected to the spindle tapered hole.

[0036] like Figure 1 As shown, during the machining process, chips, dust and other impurities easily accumulate at the contact area between the spindle taper hole and the tool holder 5. These impurities will affect the fitting accuracy between the tool holder 5 and the spindle taper hole, and thus affect the accuracy of tool positioning detection. The air blowing hole 4 can blow high-pressure gas into the spindle taper hole and use the impact force of the airflow to blow out the impurities in the taper hole, keeping the contact surface between the spindle taper hole and the tool holder 5 clean.

[0037] Please see Figure 1 The top of the spindle head 2 is provided with a spindle housing 1, and the top of the spindle housing 1 is provided with two Z-axis moving gauges 6.

[0038] like Figure 1 As shown, the spindle housing 1 serves as the load-bearing structure for the spindle head 2, providing stable support for the spindle head 2 and ensuring that the spindle head 2 maintains a precise position and posture during operation, reducing errors caused by vibration or shaking, thereby ensuring the accuracy of tool positioning detection.

[0039] Z-axis moving guide 6 is a guide and positioning device for the spindle to move in the vertical direction (Z-axis direction). The two guides work together to ensure that the spindle makes accurate linear motion in the Z-axis direction, meeting the requirements of different machining processes for tool position.

[0040] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A precision positioning and detection system for a spindle tool, characterized in that, include: The spindle head (2) has a spindle tapered hole at its bottom, and the top of the spindle tapered hole extends to the inside of the spindle head (2) near the top. Multiple airtightness detection holes (7) are provided at the bottom of the spindle head (2). The multiple airtightness detection holes (7) are spaced apart at the center point of the spindle tapered hole. An airtightness sensor is installed inside each of the multiple airtightness detection holes (7).

2. The precision positioning and detection system for a spindle tool according to claim 1, characterized in that, The number of airtightness detection holes (7) is set to four, and the four airtightness detection holes (7) are located at the four corners of the bottom of the spindle head (2).

3. The precision positioning and detection system for a spindle tool according to claim 1, characterized in that, The bottom of the spindle head (2) is set as the detection end (3), and the airtightness detection hole (7) and the spindle tapered hole are located on the detection end (3).

4. The precision positioning and detection system for a spindle tool according to claim 1, characterized in that, The bottom of the spindle head (2) is provided with a tool holder (5), the top part of the tool holder (5) is inserted into the inside of the spindle tapered hole, and the outer edge of the top of the tool holder (5) is attached to the airtightness detection hole (7).

5. The precision positioning and detection system for a spindle tool according to claim 1, characterized in that, The spacing between each of the airtightness testing holes (7) is 90°.

6. The precision positioning and detection system for a spindle tool according to claim 1, characterized in that, The spindle head (2) has multiple air holes (4) near the top on its outer surface, and the multiple air holes (4) are connected to the spindle tapered hole.

7. The precision positioning and detection system for a spindle tool according to claim 1, characterized in that, The top of the spindle head (2) is provided with a spindle housing (1).

8. The precision positioning and detection system for a spindle tool according to claim 7, characterized in that, The top of the spindle housing (1) is provided with two Z-axis moving gauges (6).

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