An integrated device for automatic indexing and precision inspection of workpieces

Abstract

This utility model discloses an integrated device for automatic workpiece indexing and precision detection, belonging to the technical field of automatic workpiece indexing and precision detection. The integrated device includes a first base and an indexing spindle box mounted on top of the first base. The indexing spindle box includes a second base slidably mounted on top of the first base, and a CNC rotary table is mounted on top of the second base. The support detection device includes a hydrostatic center frame, one side of which is equipped with a grating detection device. This utility model achieves high-precision automatic indexing of large shaft-type workpieces, both equal and unequal division, through the indexing spindle box, meeting the processing requirements of complex curved surfaces such as spiral grooves. The hydrostatic center frame in the support detection device forms a hydrostatic oil film to support the workpiece, ensuring stability during the indexing process. The grating detection device, in conjunction with an angle encoder, enables real-time detection of workpiece indexing accuracy, avoiding secondary clamping errors.

Description

Technical Field

[0001] This utility model relates to the field of automatic workpiece indexing and precision detection technology, and in particular to an integrated device for automatic workpiece indexing and precision detection. Background Technology

[0002] In the current field of machining and manufacturing, the demand for precision machining and inspection of large shaft-type workpieces is increasing.

[0003] Traditionally, workpiece indexing and accuracy inspection often rely on multiple independent devices or systems. This process is not only time-consuming and labor-intensive, but also prone to overall machining accuracy degradation due to misalignment between devices. Specifically, existing technologies have several problems: First, the indexing accuracy is insufficient. Traditional indexing devices mostly use mechanical or semi-automatic indexing methods, making it difficult to achieve high-precision equal and unequal indexing, especially for machining complex curved surfaces such as spiral grooves, which fails to meet the high-precision requirements of modern manufacturing. Second, the inspection efficiency is low. Workpiece indexing accuracy inspection usually needs to be performed using additional inspection equipment after indexing. This process not only increases the production cycle but may also introduce new errors due to the re-clamping of the workpiece. Furthermore, the system integration is low. As indexing and inspection are two relatively independent links, existing technologies lack an integrated solution that effectively integrates the two, resulting in a cumbersome and inefficient production process.

[0004] Therefore, there is an urgent need to provide an integrated device for automatic workpiece indexing and accuracy detection to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an integrated device for automatic indexing and precision detection of workpieces.

[0006] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: providing an integrated device for automatic indexing and precision detection of workpieces, including a first base and an indexing spindle box installed on the top of the first base, wherein a support detection device is provided on one side of the indexing spindle box; The indexing spindle box includes a second base that is slidably mounted on top of a first base, and a CNC rotary table is mounted on top of the second base. A four-jaw chuck is mounted on one side of the CNC rotary table. The support detection device includes two hydrostatic center frames for support, and the indexing spindle box is used for automatic indexing; One of the static pressure center frames is equipped with a grating detection device for accuracy detection on one side.

[0007] The present invention is further configured such that: the second base includes a third base slidably mounted on top of the first base, the top of the third base is connected to a sliding plate via a sliding guide rail, the CNC rotary worktable is mounted on top of the sliding plate, and bolts are installed between the sliding plate and the third base; a first bracket is fixedly connected to one side of the CNC rotary worktable, a motor is installed inside the first bracket, and the output end of the motor is fixedly connected to a transmission chain located inside the CNC rotary worktable, the transmission chain consisting of a pair of meshing gears, a single-stage worm gear pair and a work platform, and a large-diameter hydraulic cylinder is installed inside the CNC rotary worktable.

[0008] Through the above technical solution, the indexing spindle box is used to drive the rotation and indexing of large shaft-type workpieces. The spindle is horizontally mounted on the main machine's worktable and, under the control of the servo system, completes various indexing and rotary operations, realizing the machining of equal and unequally divided holes, surfaces, spiral grooves, and curved surfaces, while ensuring high machining accuracy. The indexing spindle box mainly consists of three parts: a CNC rotary worktable, a second base, and a four-jaw chuck. The CNC rotary worktable is used to drive the workpiece to rotate and index. The CNC rotary worktable is mounted on the second base, and the axis of the worktable is adjusted to be coaxial with the axis of the workpiece through the second base. The four-jaw chuck clamps the workpiece. Locking function: The CNC rotary worktable has a built-in large-diameter hydraulic cylinder. When the CNC rotary worktable is indexed, hydraulic oil is introduced into the cylinder, and the brake piston presses the locking plate against the housing, realizing the locking of the CNC rotary worktable. After the workpiece is processed, the brake cylinder is depressurized, and the brake is released.

[0009] The present invention is further configured such that: a horizontal adjustment device is provided on the outside of the skateboard, and a side top device is provided on one side of the horizontal adjustment device.

[0010] Through the above technical solution, the second base consists of a third base, a sliding plate, a horizontal adjustment device, and a side-support device. Adjustment ensures that the axis of the CNC rotary table is coaxial with the workpiece axis. A sliding guide rail is used between the sliding plate and the third base to ensure support rigidity. Manually rotating the lead screw allows the CNC rotary table to move along the axial direction, facilitating workpiece clamping or loosening. Once the CNC rotary table is in position, bolts can be used to fix the sliding plate to the third base. The indexing spindle box consists of the CNC rotary table and multiple bases. The CNC rotary table can be adjusted by rotating the screw... The CNC rotary table moves linearly on the base; the indexing is driven by a worm gear pair, and hydraulic or pneumatic locking and unlocking can achieve arbitrary indexing; with the support, it can clamp heavy workpieces and realize the machining of continuous holes, grooves and curved surfaces with equal or unequal division; the linear movement of the CNC rotary table on the base is achieved by rotating a screw, which is manually operated; before moving, loosen the screw, then rotate the screw, and after moving into position, fix the slide plate with screws, and then adjust the height and horizontal position of the axis by adjusting the screws to achieve precise positioning of the CNC rotary table.

[0011] The present invention is further configured such that: a control system is provided inside the CNC rotary table, and the control system is connected to an angle encoder.

[0012] Through the above technical solution, the principle of rotary indexing is as follows: The entire transmission chain of the CNC rotary table consists of a motor, a pair of meshing gears, a single-stage worm gear pair, and the worktable. When the motor receives the start signal issued by the control system, it drives the worktable to rotate and index through the transmission chain. The spindle is directly connected to the angle encoder. Through encoder feedback, the system achieves full closed-loop control and realizes high-precision indexing.

[0013] The present invention is further configured such that: a fourth base is slidably installed on the bottom of the hydrostatic center frame and placed on the ground; the hydrostatic center frame and the fourth base are connected by a guide rail; the hydrostatic center frame has four oil chambers inside, and the four oil chambers are distributed within a range of more than 150 degrees; and a pressure oil outlet and a hydrostatic oil hole are opened on one side of the hydrostatic center frame.

[0014] Through the above technical solution, the support detection device consists of two sets of hydrostatic center frames and one set of grating detection device. The support detection device and the indexing spindle box form an automatic workpiece indexing device. The position of the hydrostatic center frame is adjusted according to the workpiece size, and the workpiece is placed on the hydrostatic center frame. The workpiece support shaft diameter is precision machined to meet the dimensional and positional accuracy requirements. The support hydrostatic center frame adopts hydrostatic support. After oil is supplied, the workpiece floats. After the workpiece is connected to the drive indexing spindle box, the connection between the support detection device and the workpiece is adjusted. The hydrostatic center frame adopts hydrostatic support. Within a range of more than 150 degrees, four oil chambers form a hydrostatic oil film with the workpiece after oil is supplied, supporting the entire workpiece. When the workpiece is indexed in place, the hydrostatic oil supply stops, the clamping cylinder is supplied with oil, the workpiece is clamped, and cutting processing can be performed.

[0015] The present invention is further configured such that: a horizontal adjustment device is provided inside the grating detection device, a vertical adjustment device is provided outside the horizontal adjustment device, a fifth base placed on the ground is installed at the bottom of the grating detection device, the grating detection device and the fifth base are connected by a guide rail, an angle encoder is provided inside the grating detection device, and a coupling is connected to the front end.

[0016] Through the above technical solution, the grating detection device can be adjusted in the horizontal and vertical directions through the horizontal adjustment device and the vertical adjustment device. After the grating axis is coaxial with the workpiece, the workpiece is fixed to the coupling. The grating detection device is limited and guided by the fifth base and the guide rail, and fixed by bolts. The two static pressure center frames are used in conjunction with the indexing device to have a maximum load capacity of 20 tons.

[0017] The beneficial effects of this utility model are as follows: 1. This utility model achieves high-precision equal and unequal automatic indexing of large shaft workpieces through an indexing spindle box, meeting the processing requirements of complex curved surfaces such as spiral grooves; the workpiece is supported by a hydrostatic oil film formed by the hydrostatic center frame in the support and detection device, ensuring stability during the indexing process; 2. This utility model uses a grating detection device in conjunction with an angle encoder to achieve real-time detection of workpiece indexing accuracy, avoiding secondary clamping errors. This device integrates indexing and detection functions, greatly improving processing efficiency and accuracy, and solving the problems of insufficient accuracy, low detection efficiency, and low system integration of traditional indexing devices. Attached Figure Description

[0018] Figure 1 This is a first-view structural diagram of the present invention; Figure 2 This is a second-view sectional view of the present invention; Figure 3 This is a third-view sectional view of the present invention; Figure 4 This is a sectional view of the indexing spindle box. Figure 5 This is a structural sectional view of the hydrostatic center frame; Figure 6 This is a cross-sectional view of the grating detection device.

[0019] In the diagram: 1. First base; 2. Indexing spindle box; 3. Support detection device; 4. Second base; 401. Third base; 402. Slide plate; 403. First bracket; 404. Motor; 5. CNC rotary table; 6. Four-jaw chuck; 7. Hydrostatic center frame; 701. Fourth base; 702. Pressure oil outlet; 703. Hydrostatic oil hole; 8. Grating detection device; 801. Fifth base. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0021] Please see Figure 1 - Figure 6This embodiment of an integrated automatic workpiece indexing and precision detection device includes a first base 1 and an indexing spindle box 2 mounted on top of the first base 1. A support detection device 3 is provided on one side of the indexing spindle box 2. The indexing spindle box 2 includes a second base 4 slidably mounted on top of the first base 1. The second base 4 includes a third base 401 slidably mounted on top of the first base 1. A slide plate 402 is connected to the top of the third base 401 via a sliding guide rail. A CNC rotary table 5 is mounted on top of the slide plate 402. Bolts are installed between the slide plate 402 and the third base 401. A first bracket 403 is fixedly connected to one side of the CNC rotary table 5. A motor 404 is installed inside the first bracket 403. The output end of the motor 404 is fixedly connected to a transmission chain located inside the CNC rotary table 5. The transmission chain consists of a pair of meshing gears, a single-stage worm gear pair, and a work platform. The CNC rotary table 5... The indexing spindle box 2 is equipped with a large-diameter hydraulic cylinder and is used to drive the rotation and indexing of large shaft-type workpieces. The spindle is horizontally mounted on the main machine's worktable and, under the control of the servo system, completes various indexing and rotary operations, enabling the machining of equally and unequally divided holes, surfaces, and spiral grooves, while ensuring high machining accuracy. The indexing spindle box 2 mainly consists of three parts: a CNC rotary table 5, a second base 4, and a four-jaw chuck 6. The CNC rotary table 5 is used to drive the workpiece to rotate and index. The CNC rotary table 5 is mounted on the second base 4, and the axis of the worktable is adjusted to be coaxial with the axis of the workpiece through the second base 4. The four-jaw chuck 6 clamps the workpiece. Locking function: The CNC rotary table 5 has a built-in large-diameter hydraulic cylinder. When the CNC rotary table 5 is indexed, hydraulic oil is introduced into the cylinder, and the brake piston presses the locking plate against the housing, thus locking the CNC rotary table 5. After the workpiece is machined, the brake cylinder is depressurized, and the brake is released.

[0022] like Figure 1 - Figure 4As shown, a horizontal adjustment device is provided on the outside of the slide plate 402, and a side-support device is provided on one side of the horizontal adjustment device. The second base 4 is composed of the third base 401, the slide plate 402, the horizontal adjustment device, and the side-support device. The adjustment ensures that the axis of the CNC rotary table 5 is coaxial with the workpiece. The slide plate 402 and the third base 401 are connected by a sliding guide rail to ensure support rigidity. Manually rotating the lead screw can move the CNC rotary table 5 along the axial direction, which is convenient for clamping or releasing the workpiece. After the CNC rotary table 5 is moved into place, the slide plate 402 and the third base 401 can be fixed with bolts. The indexing spindle box 2 is composed of the CNC rotary table 5. It consists of multiple bases; the CNC rotary table 5 can move linearly on the base by rotating the screw; the CNC rotary table 5 is partially driven by a worm gear pair for indexing, and can be locked and released by hydraulic or pneumatic pressure to achieve arbitrary indexing; with the support, it can clamp workpieces with larger weights and realize the machining of continuous holes, grooves and curved surfaces with equal or unequal division; the linear movement of the CNC rotary table 5 on the base is achieved by rotating the screw, which is manually operated; before moving, the screw is loosened first, and then the screw is rotated. After moving into position, the height and horizontal position of the axis are adjusted by adjusting the screw slide plate 402 and then adjusting the screw to achieve precise positioning of the CNC rotary table 5.

[0023] like Figure 1 - Figure 4 As shown, a CNC rotary table 5 is installed on the top of the second base 4. The CNC rotary table 5 has a control system inside, which is connected to an angle encoder. The rotation indexing principle is as follows: The entire transmission chain of the CNC rotary table 5 consists of a motor 404, a pair of meshing gears, a single-stage worm gear pair, and the worktable. When the motor 404 receives the start signal from the control system, it drives the worktable to rotate and index through the transmission chain. The spindle is directly connected to the angle encoder. Through encoder feedback, the system is fully closed-loop controlled to achieve high-precision indexing.

[0024] like Figure 1 - Figure 5As shown, a four-jaw chuck 6 is installed on one side of the CNC rotary table 5. The support detection device 3 includes two hydrostatic center frames 7 for support. A fourth base 701, placed on the ground, is slidably installed on the bottom of the hydrostatic center frame 7. The hydrostatic center frame 7 and the fourth base 701 are connected by guide rails. The hydrostatic center frame 7 has four oil chambers inside, and the four oil chambers are distributed within a range greater than 150 degrees. A pressure oil outlet 702 and a hydrostatic oil hole 703 are opened on one side of the hydrostatic center frame 7. The support detection device 3 consists of two sets of hydrostatic center frames 7 and one set of grating detection device 8. The support detection device 3 and the indexing spindle box are connected. 2. Assemble the automatic workpiece indexing device; adjust the position of the hydrostatic center frame 7 according to the workpiece size, place the workpiece on the hydrostatic center frame 7, the workpiece support shaft diameter is precision machined, and the dimensional and positional accuracy meets the installation requirements; the support hydrostatic center frame 7 adopts hydrostatic support, and the workpiece floats after oil is supplied. After the workpiece is connected to the drive indexing spindle box 2, adjust the support detection device 3 to connect with the workpiece; the hydrostatic center frame 7 adopts hydrostatic support, and four oil chambers within a range of more than 150 degrees form a hydrostatic oil film with the workpiece after oil is supplied, supporting the entire workpiece. When the workpiece is indexed in place, the hydrostatic oil supply stops, the clamping cylinder is supplied with oil, the workpiece is clamped, and cutting can be performed.

[0025] like Figure 1 - Figure 6 As shown, the indexing spindle box 2 is used for automatic indexing. One side of a hydrostatic center frame 7 is equipped with a grating detection device 8 for precision inspection. The grating detection device 8 has a horizontal adjustment device inside and a vertical adjustment device outside. A fifth base 801, placed on the ground, is mounted on the bottom of the grating detection device 8. The grating detection device 8 and the fifth base 801 are connected by a guide rail. An angle encoder is installed inside the grating detection device 8, and its front end is connected to a coupling. The grating detection device 8 is adjusted via the horizontal and vertical adjustment devices. The device can be adjusted in both horizontal and vertical directions. After the grating axis is coaxial with the workpiece, the workpiece is fixed to the coupling. The grating detection device 8 is limited and guided by the fifth base 801 and the guide rail, and fixed by bolts. The two hydrostatic center frames 7 are used in conjunction with the indexing device to carry a maximum load of 20 tons. The indexing spindle box 2 realizes the workpiece's precise automatic indexing and arbitrary indexing requirements. The support detection device 3 is used for the support of the shaft diameter at both ends of the workpiece and the detection of the workpiece's indexing accuracy. The support detection device 3 and the indexing spindle box 2 form an automatic workpiece indexing and detection device.

[0026] In use, this invention involves clamping large shaft-like workpieces onto a CNC rotary table 5 using a four-jaw chuck 6, placing the workpiece on two hydrostatic center supports 7, and adjusting the axis of the CNC rotary table 5 to be coaxial with the workpiece axis via a second base 4. After the motor 404 starts, it drives the CNC rotary table 5 to rotate and index via a transmission chain. The spindle direct-coupled angle encoder provides real-time feedback on the indexing angle, and the control system performs closed-loop control based on the encoder feedback, achieving high-precision equal and unequal indexing to meet the processing requirements of complex curved surfaces such as spiral grooves. During the indexing process, the two hydrostatic center supports 7 form a hydrostatic oil film through oil chambers to support the workpiece. After the workpiece is indexed in place, the hydrostatic oil supply stops, and the clamping cylinder is energized to lock the workpiece. Simultaneously, the grating detection device 8 is coaxial with the workpiece through horizontal and vertical adjustment devices, and uses an angle encoder and coupling to detect the workpiece indexing accuracy in real time. The detection data is directly fed back to the control system, realizing integrated indexing and detection operations, avoiding secondary clamping errors, and significantly improving processing efficiency and accuracy.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An integrated device for automatic workpiece indexing and precision detection, comprising a first base (1) and an indexing spindle box (2) mounted on the top of the first base (1), characterized in that: A support detection device (3) is provided on one side of the indexing spindle box (2); The indexing spindle box (2) includes a second base (4) that is slidably mounted on the top of the first base (1), and a CNC rotary table (5) is mounted on the top of the second base (4). A four-jaw chuck (6) is mounted on one side of the CNC rotary table (5). The support detection device (3) includes two hydrostatic center frames (7) for support, and the indexing spindle box (2) is used for automatic indexing; One of the static pressure center frames (7) is provided with a grating detection device (8) for accuracy detection on one side.

2. The integrated device for automatic indexing and precision detection of workpieces according to claim 1, characterized in that: The second base (4) includes a third base (401) slidably mounted on the top of the first base (1). A slide plate (402) is slidably connected to the top of the third base (401). The CNC rotary table (5) is mounted on the top of the slide plate (402). Bolts are installed between the slide plate (402) and the third base (401). A first bracket (403) is fixedly connected to one side of the CNC rotary table (5). A motor (404) is installed inside the first bracket (403). The output end of the motor (404) is fixedly connected to a transmission chain located inside the CNC rotary table (5). The transmission chain consists of a pair of meshing gears, a single-stage worm gear pair and a working platform. A large-diameter hydraulic cylinder is installed inside the CNC rotary table (5).

3. The integrated device for automatic indexing and precision detection of workpieces according to claim 2, characterized in that: The skateboard (402) is provided with a horizontal adjustment device on its exterior, and a side top device is provided on one side of the horizontal adjustment device.

4. The integrated device for automatic indexing and precision detection of workpieces according to claim 1, characterized in that: The CNC rotary table (5) is equipped with a control system, and the control system is connected to an angle encoder.

5. The integrated device for automatic indexing and precision detection of workpieces according to claim 1, characterized in that: The bottom of the hydrostatic center frame (7) is slidably mounted with a fourth base (701) placed on the ground. The hydrostatic center frame (7) and the fourth base (701) are connected by a guide rail. The hydrostatic center frame (7) has four oil chambers inside, and the four oil chambers are distributed in a range greater than 150 degrees. A pressure oil outlet (702) and a hydrostatic oil hole (703) are opened on one side of the hydrostatic center frame (7).

6. The integrated device for automatic indexing and precision detection of workpieces according to claim 1, characterized in that: The grating detection device (8) is equipped with a horizontal adjustment device inside and a vertical adjustment device outside. The bottom of the grating detection device (8) is equipped with a fifth base (801) placed on the ground. The grating detection device (8) and the fifth base (801) are connected by a guide rail. The grating detection device (8) is equipped with an angle encoder and a coupling is connected to its front end.

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