A tool for detecting rotation angle and precision of five-axis head

Abstract

The present application relates to the technical field of machine tool precision detection, and in particular to a tool for detecting the rotation angle and precision of a five-axis head, comprising a detection support, a driving structure, a fixing structure, a mounting structure, a limiting structure, a pressing structure, a detection fixing seat, a tool shank, a Z-axis swing head, a horizontal adjusting disc, a Renishaw XR-20 mounting ring and a Renishaw XR-20 wireless rotary shaft calibration device. The driving structure drives two protrusions in the fixing structure to simultaneously engage with the detection fixing seat, facilitating quick mounting and fixing of the detection fixing seat and the detection support. The pressing structure presses against the limiting structure, allowing the limiting block in the limiting structure to be mounted with the detection support. The mounting structure facilitates quick dismounting of the Renishaw XR-20 wireless rotary shaft calibration device with the Renishaw XR-20 mounting ring and the horizontal adjusting disc, and quick mounting of the Renishaw XR-20 wireless rotary shaft calibration device with the Renishaw XR-20 mounting ring and the detection fixing seat.

Description

Technical Field

[0001] This invention relates to the field of machine tool precision testing technology, specifically a tooling for testing the rotation angle and precision of a five-axis head. Background Technology

[0002] A five-axis machine tool is a high-precision machine tool specifically designed for machining complex curved surfaces. It can complete the machining of multiple angle surfaces in a single setup. Due to industrial development, five-axis machine tools are widely used in industries such as precision mold making and aerospace. As the requirements for machined parts continue to increase, the accuracy of five-axis machine tools is usually tested using inspection fixtures.

[0003] However, traditional testing fixtures involve installing the leveling disc with screws, resulting in low installation efficiency. Furthermore, when adjusting the accuracy of the Renishaw XR-20 wireless rotary shaft calibration device with the Renishaw XR-20 mounting ring at different positions, the device must be disassembled before being installed on the testing fixture. Since the mounting screws of the Renishaw XR-20 mounting ring are obstructed by the Renishaw XR-20 wireless rotary shaft calibration device, this process must be repeated each time the device is removed before installation on the testing fixture, resulting in low operational flexibility. Additionally, the installation of the testing fixture and the testing support requires multiple bolts for fixation, leading to low fixing efficiency. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a tooling for detecting the rotation angle and accuracy of a five-axis head.

[0005] The technical solution adopted by this invention to solve its technical problem is: a tooling for detecting the rotation angle and accuracy of a five-axis head, including a detection bracket, a fixing structure for mounting a detection fixture on the detection bracket; the fixing structure is driven by a drive structure; a tool holder is mounted on the detection fixture; a Z-axis swing head is mounted on the detection bracket; the detection bracket and the horizontal adjustment plate are limited by a limiting structure; the horizontal adjustment plate is provided with a pressing structure for driving the limiting structure; a Renishaw XR-20 mounting ring is mounted on the horizontal adjustment plate by a mounting structure, and a Renishaw XR-20 wireless rotary axis calibration device is mounted on the Renishaw XR-20 mounting ring;

[0006] The fixing structure includes rubber blocks, two rubber blocks are slidably connected to the detection bracket, a protrusion is fixedly connected to the rubber block, the protrusion engages with a slot on the detection fixing seat, a sliding plate is fixedly connected to the rubber block, the sliding plate is slidably connected to the detection bracket, a sliding rod is fixedly connected to the sliding plate, the sliding rod is slidably connected to the detection bracket, and a connecting column is rotatably connected to the sliding rod.

[0007] The driving structure includes a driving block, which is slidably connected to the detection bracket. The driving block has two driving slots, and the two connecting columns are in rolling engagement with the two driving slots. The two driving slots are inclined. A lead screw is rotatably connected to the detection bracket, and the lead screw is threadedly connected to the driving block.

[0008] Specifically, a guide rod is fixedly connected to the skateboard, and the guide rod is slidably connected to the detection bracket.

[0009] Specifically, a roller is rotatably connected to the drive block, and the roller and the detection bracket are in rolling engagement.

[0010] Specifically, the limiting structure includes limiting blocks, two limiting blocks are slidably connected to the horizontal adjustment plate, the two limiting blocks are respectively engaged with two limiting slots on the detection bracket, a driving rod is slidably connected to the horizontal adjustment plate, the driving rod is slidably connected to the limiting blocks, the two driving rods are fixedly connected to the connecting plate, and the connecting plate is slidably connected to the horizontal adjustment plate.

[0011] Specifically, a boss is fixedly connected to the connecting plate, the boss has a trapezoidal cross-section, the driving rod slides with the inclined surface on the limiting block, and a tension spring is fixedly connected between the connecting plate and the horizontal adjustment disc.

[0012] Specifically, the pressing structure includes a connecting shaft, which is rotatably connected to the horizontal adjustment disc. A connecting rod is fixedly connected to the connecting shaft, and a ball bearing is rotatably connected to the connecting rod. The ball bearing and the boss are in rolling engagement.

[0013] Specifically, two limiting rods are slidably connected to the connecting shaft, and the two limiting rods are respectively engaged with two limiting holes on the horizontal adjustment plate. The two limiting rods are fixedly connected to the pressing plate.

[0014] Specifically, the pressing plate is slidably connected to the connecting shaft, and a second return spring is fixedly connected between the pressing plate and the connecting shaft.

[0015] Specifically, the mounting structure includes mounting blocks, and two mounting blocks are slidably connected to the Renishaw XR-20 mounting ring. The two mounting blocks engage with two mounting slots on the horizontal adjustment plate, and a first return spring is fixedly connected between the mounting blocks and the Renishaw XR-20 mounting ring.

[0016] Specifically, pull plates are slidably connected to the two mounting blocks, and the two pull plates are slidably connected to the Renishaw XR-20 mounting ring. The cross-section of the pull plates is "L" shaped.

[0017] The beneficial effects of this invention are:

[0018] (1) The tooling for detecting the rotation angle and accuracy of a five-axis head described in this invention has a fixing structure on the detection bracket for installing the detection fixing seat. The fixing structure is driven by a drive structure. The drive structure drives two protrusions in the fixing structure to engage with the detection fixing seat at the same time, which facilitates the quick installation and fixing of the detection fixing seat and the detection bracket, thus improving the installation efficiency.

[0019] (2) The present invention provides a tooling for detecting the rotation angle and accuracy of a five-axis head. The detection bracket and the horizontal adjustment plate are limited by a limiting structure. The horizontal adjustment plate is provided with a pressing structure that drives the limiting structure. The pressing structure presses against the limiting structure, so that the limiting block in the limiting structure is installed with the detection bracket, which improves stability and operational flexibility. At the same time, the limiting rod in the pressing structure facilitates the fixing of the connecting shaft, preventing the limiting structure from automatically releasing the limiting of the horizontal adjustment plate.

[0020] (3) A tooling for detecting the rotation angle and accuracy of a five-axis head according to the present invention, wherein a Renishaw XR-20 mounting ring is mounted on a horizontal adjustment plate via a mounting structure, and a Renishaw XR-20 wireless rotary shaft calibration device is mounted on the Renishaw XR-20 mounting ring. The mounting structure facilitates the quick disassembly of the Renishaw XR-20 wireless rotary shaft calibration device with the Renishaw XR-20 mounting ring from the horizontal adjustment plate, so as to facilitate the installation of the Renishaw XR-20 wireless rotary shaft calibration device that drives the Renishaw XR-20 mounting ring between the detection fixture and the detection base. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of a tooling for detecting the rotation angle and accuracy of a five-axis head, provided by the present invention.

[0023] Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A.

[0024] Figure 3 This is a schematic diagram of the connection structure between the tool holder and the detection fixing seat of the present invention;

[0025] Figure 4 This is a schematic diagram of the connection structure between the detection fixture and the detection bracket of the present invention;

[0026] Figure 5 This is a schematic diagram of the connection structure of the detection fixture of the present invention;

[0027] Figure 6 This is a schematic diagram of the connection structure between the Renishaw XR-20 mounting ring and the leveling disc of the present invention;

[0028] Figure 7 for Figure 6 The diagram shown is an enlarged view of the structure of section B.

[0029] Figure 8 for Figure 6 The diagram shown is an enlarged view of the C-section structure.

[0030] Figure 9 This is a schematic diagram of the connection structure of the detection bracket of the present invention;

[0031] Figure 10 This is a schematic diagram of the connection structure between the sliding plate and the detection bracket of the present invention;

[0032] Figure 11 for Figure 10 The diagram shown is an enlarged view of the structure of part D.

[0033] Figure 12 for Figure 10 The diagram shown is an enlarged view of the E-section structure.

[0034] Figure 13 This is a schematic diagram of the structure of the boss of the present invention;

[0035] Figure 14 This is a schematic diagram of the connection structure between the limiting rod and the connecting shaft of the present invention.

[0036] In the diagram: 1. Detection bracket; 2. Drive structure; 201. Drive block; 202. Drive groove; 203. Roller; 204. Lead screw; 3. Fixing structure; 301. Protrusion; 302. Slot; 303. Rubber block; 304. Slide plate; 305. Slide rod; 306. Connecting column; 307. Guide rod; 4. Mounting structure; 401. Mounting block; 402. Mounting groove; 403. First return spring; 404. Pull plate; 5. Limiting structure; 501. Limiting block; 502. 503. Limiting groove; 504. Drive rod; 505. Connecting plate; 506. Boss; 507. Tension spring; 608. Pressing structure; 609. Ball bearing; 6000. Connecting rod; 601. Connecting shaft; 602. Limiting rod; 603. Limiting hole; 604. Pressing plate; 605. Second return spring; 606. Detection fixing seat; 7. Tool holder; 8. Z-axis swing head; 9. Horizontal adjustment plate; 10. Renishaw XR-20 mounting ring; 11. Renishaw XR-20 wireless rotary shaft calibration device. Detailed Implementation

[0037] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0038] like Figures 1-14 As shown, the tooling for detecting the rotation angle and accuracy of a five-axis head according to the present invention includes a detection bracket 1, a fixing structure 3 for mounting a detection fixing seat 7 on the detection bracket 1; the fixing structure 3 is driven by a driving structure 2; a tool holder 8 is mounted on the detection fixing seat 7; a Z-axis swing head 9 is mounted on the detection bracket 1; the detection bracket 1 and the horizontal adjustment plate 10 are limited by a limiting structure 5; the horizontal adjustment plate 10 is provided with a pressing structure 6 for driving the limiting structure 5; a Renishaw XR-20 mounting ring 11 is mounted on the horizontal adjustment plate 10 through a mounting structure 4, and a Renishaw XR-20 wireless rotary axis calibration device 12 is mounted on the Renishaw XR-20 mounting ring 11;

[0039] The fixing structure 3 includes rubber blocks 303. Two rubber blocks 303 are slidably connected to the detection bracket 1. A protrusion 301 is fixedly connected to the rubber blocks 303. The protrusion 301 engages with the slot 302 on the detection fixing seat 7. A sliding plate 304 is fixedly connected to the rubber blocks 303. The sliding plate 304 is slidably connected to the detection bracket 1. A sliding rod 305 is fixedly connected to the sliding plate 304. The sliding rod 305 is slidably connected to the detection bracket 1. A connecting column 306 is rotatably connected to the sliding rod 305.

[0040] The driving structure 2 includes a driving block 201, which is slidably connected to the detection bracket 1. The driving block 201 is provided with two driving grooves 202. The two connecting columns 306 are in rolling engagement with the two driving grooves 202. The two driving grooves 202 are inclined. A lead screw 204 is rotatably connected to the detection bracket 1. The lead screw 204 is threadedly connected to the driving block 201.

[0041] Specifically, a guide rod 307 is fixedly connected to the slide plate 304, and the guide rod 307 is slidably connected to the detection bracket 1. A roller 203 is rotatably connected to the drive block 201, and the roller 203 rolls with the detection bracket 1. When using the tooling, first install the tool holder 8 onto the spindle, orient the spindle, and clamp the detection fixing seat 7 onto the tool holder 8. At this time, insert the detection fixing seat 7 into the horizontally arranged mounting hole on the detection bracket 1. It can be positioned and installed with the reference surface of the detection fixing seat 7. When the detection fixing seat 7 is inserted into the positioning hole on the detection bracket 1, it can be used for positioning and installation. The upper end of the testing bracket 1 is leveled using a dial indicator on the reference surface of the testing fixture 7, and the tool holder 8 is locked. Then, by rotating the lead screw 204, the threaded drive block 201 slides forward. When the drive block 201 slides, the roller 203 rolls between it and the testing bracket 1. The roller 203 reduces the friction of the drive block 201. At the same time, the drive block 201 causes the two connecting posts 306 to roll between the two drive grooves 202. Since the two drive grooves 202 are inclined, the two sliding rods 305 can drive the two sliding plates 304 to slide towards each other. When the sliding plate 304 slides, it drives the rubber block 303 to slide, and simultaneously drives the guide rod 307 to slide. The guide rod 307 makes the sliding plate 304 slide more smoothly. When the rubber block 303 slides, it drives the protrusion 301 to engage with the slot 302 on the detection fixing seat 7. Thus, when the drive block 201 slides, it simultaneously drives the two rubber blocks 303 to drive the two protrusions 301 to fix the detection fixing seat 7, which facilitates quick installation and disassembly between the detection fixing seat 7 and the detection bracket 1, improving the efficiency of the installation and disassembly of the detection fixing seat 7. At the same time, the protrusion 301 increases the... The stability between the test fixture 7 and the test bracket 1 is checked. (The test fixture 7 is connected to the tool holder 8 via a normal tool clamping method. The Renishaw XR-20 wireless rotary axis calibration device 12 can be directly installed. The Renishaw XR-20 mounting ring 11 that comes with the Renishaw XR-20 wireless rotary axis calibration device 12 is used for connection. The rotational accuracy of the C-axis of the five-axis head can be checked.) (The five-axis machine tool has three linear axes (X-axis, Y-axis, and Z-axis) and two rotary axes. The axis that rotates around the X-axis is defined as the A-axis, the axis that rotates around the Y-axis is defined as the B-axis, and the axis that rotates around the Z-axis is defined as the C-axis.)

[0042] Specifically, the limiting structure 5 includes limiting blocks 501. Two limiting blocks 501 are slidably connected to the horizontal adjustment disk 10. The two limiting blocks 501 are respectively engaged with two limiting grooves 502 on the detection bracket 1. A drive rod 503 is slidably connected to the horizontal adjustment disk 10. The drive rod 503 is slidably connected to the limiting blocks 501. The two drive rods 503 are fixedly connected to the connecting plate 504. The connecting plate 504 is slidably connected to the horizontal adjustment disk 10. A boss 505 is fixedly connected to the connecting plate 504. The boss 505 has a trapezoidal cross-section. The drive rods 503 are slidably engaged with the inclined surfaces on the limiting blocks 501. The connecting plate 504 and the horizontal adjustment disk 10 are... A tension spring 506 is fixedly connected to the horizontal adjustment disc 10. The pressing structure 6 includes a connecting shaft 603, which is rotatably connected to the horizontal adjustment disc 10. A connecting rod 602 is fixedly connected to the connecting shaft 603, and a ball bearing 601 is rolledly connected to the connecting rod 602. The ball bearing 601 rolls with the boss 505. Two limiting rods 604 are slidably connected to the connecting shaft 603. The two limiting rods 604 are respectively engaged with two limiting holes 605 on the horizontal adjustment disc 10. The two limiting rods 604 are fixedly connected to a pressing plate 606, which is slidably connected to the connecting shaft 603. A second return spring 607 is fixedly connected to the pressing plate 606 and the connecting shaft 603. When the horizontal adjustment plate 10 needs to be installed onto the detection bracket 1, insert the horizontal adjustment plate 10 into the mounting hole on the detection bracket 1, and then press the pressing plate 606 with an Allen wrench. When the pressing plate 606 slides into the connecting shaft 603, the second return spring 607 retracts. At the same time, the pressing plate 606 will cause the two limit rods 604 to no longer engage with the limit holes 605 on the horizontal adjustment plate 10. At this time, the connecting shaft 603 can be rotated. When the connecting shaft 603 rotates, it will drive the connecting rod 602 to rotate. When the connecting rod 602 rotates, it will drive the ball 601 to roll on the boss 505. When the ball 601 gradually moves to the higher side of the boss 505, the ball 601 gradually abuts against the boss 505, driving the connecting plate 50 4. Sliding: When the connecting plate 504 slides, the tension spring 506 contracts, causing the connecting plate 504 to drive the two drive rods 503 to slide between the two limit blocks 501. Since the sliding surfaces of the drive rods 503 and the limit blocks 501 are inclined, the limit blocks 501 will slide towards the limit grooves 502, causing the limit blocks 501 to engage with the limit grooves 502 on the detection bracket 1. Thus, when the connecting shaft 603 rotates, it simultaneously drives the two limit blocks 501 to engage with the limit grooves 502 on the detection bracket 1, facilitating the quick installation and disassembly of the horizontal adjustment disc 10 to the detection bracket 1, improving the efficiency of installation and disassembly. At this time, the Allen wrench can be pulled out, causing the two limit rods 604 to engage with the limit holes 605 under the action of the second return spring 607.This design facilitates the fixing of the rotating connecting shaft 603, improving stability.

[0043] Specifically, the mounting structure 4 includes mounting blocks 401. Two mounting blocks 401 are slidably connected to the Renishaw XR-20 mounting ring 11. The two mounting blocks 401 engage with two mounting slots 402 on the horizontal adjustment plate 10. A first return spring 403 is fixedly connected between the mounting blocks 401 and the Renishaw XR-20 mounting ring 11. Pull plates 404 are slidably connected to the two mounting blocks 401. The two pull plates 404 are slidably connected to the Renishaw XR-20 mounting ring 11. The pull plates 404 have an "L" shaped cross-section, allowing the two mounting blocks 401 to be directly inserted into the horizontal adjustment plate 10. When the inclined surface of the mounting block 401 is aligned with the horizontal adjustment plate... When the mounting block 401 is inserted between the horizontal adjustment plate 10, the mounting block 401 will drive the pull plate 404 to slide outward, and at the same time the first return spring 403 will retract. When the mounting block 401 is inside the horizontal adjustment plate 10, the mounting block 401 will engage with the mounting groove 402 under the action of the first return spring 403. At this time, the installation of the Renishaw XR-20 mounting ring 11 is completed. Thus, the mounting block 401 facilitates the quick installation of the Renishaw XR-20 mounting ring 11 on the horizontal adjustment plate 10, improving the installation efficiency. (The horizontal adjustment plate 10 is used to adjust the coaxial accuracy of the horizontal direction with the rotation axis of the A-axis or B-axis, and the Renishaw XR-20 mounting ring 11 is used to adjust the coaxial accuracy of the vertical direction with the rotation axis of the A-axis or B-axis).

[0044] When using this invention and the tooling, first install the tool holder 8 onto the spindle, orient the spindle, and clamp the detection fixing seat 7 onto the tool holder 8. At this point, insert the detection fixing seat 7 into the horizontally arranged mounting holes on the detection bracket 1 for positioning with the reference surface of the detection fixing seat 7. When the detection fixing seat 7 is inserted into the positioning hole on the detection bracket 1, a dial indicator can be used on the upper end of the detection bracket 1 to level the reference surface on the detection fixing seat 7 and lock the tool holder 8. Then, by rotating the lead screw 204, the threaded drive... The drive block 201 slides forward, causing the roller 203 to roll between itself and the detection bracket 1. The roller 203 reduces the friction of the drive block 201. Simultaneously, the drive block 201 causes the two connecting posts 306 to roll between the two drive grooves 202. Because the two drive grooves 202 are inclined, the two sliding rods 305 can drive the two sliding plates 304 to slide towards each other. When the sliding plates 304 slide, they cause the rubber block 303 to slide, and simultaneously drive the guide rod 307 to slide. The design of 307 makes the sliding plate 304 slide more smoothly. When the rubber block 303 slides, it drives the protrusion 301 to engage with the slot 302 on the detection fixing seat 7. Thus, when the drive block 201 slides, it simultaneously drives the two rubber blocks 303 to drive the two protrusions 301 to fix the detection fixing seat 7, which facilitates quick installation and removal between the detection fixing seat 7 and the detection bracket 1, improving the efficiency of the installation and removal of the detection fixing seat 7. At the same time, the protrusion 301 increases the stability between the detection fixing seat 7 and the detection bracket 1. (The detection mounting base 7 is connected to the tool holder 8 via a normal tool clamping method. The Renishaw XR-20 wireless rotary axis calibration device 12 can be directly installed. The Renishaw XR-20 mounting ring 11 that comes with the Renishaw XR-20 wireless rotary axis calibration device 12 is used for connection. The rotational accuracy of the C-axis of the five-axis head can be detected.) (The five-axis machine tool has three linear axes (X-axis, Y-axis, Z-axis) and two rotary axes. The axis that rotates around the X-axis is defined as the A-axis, the axis that rotates around the Y-axis is defined as the B-axis, and the axis that rotates around the Z-axis is defined as the C-axis.)

[0045] When the horizontal adjustment plate 10 needs to be installed onto the detection bracket 1, insert the horizontal adjustment plate 10 into the mounting hole on the detection bracket 1, and then press the pressing plate 606 with an Allen wrench. When the pressing plate 606 slides into the connecting shaft 603, the second return spring 607 retracts. At the same time, the pressing plate 606 will cause the two limit rods 604 to no longer engage with the limit holes 605 on the horizontal adjustment plate 10. At this time, the connecting shaft 603 can be rotated. When the connecting shaft 603 rotates, it will drive the connecting rod 602 to rotate. When the connecting rod 602 rotates, it will drive the ball 601 to roll on the boss 505. When the ball 601 gradually moves to the higher side of the boss 505, the ball 601 gradually abuts against the boss 505, causing the connecting plate 504 to slide. When the tension spring 506 contracts, the connecting plate 504 drives the two drive rods 503 to slide between the two limit blocks 501. Since the sliding surfaces of the drive rods 503 and the limit blocks 501 are inclined, the limit blocks 501 will slide towards the limit grooves 502, causing the limit blocks 501 to engage with the limit grooves 502 on the detection bracket 1. Thus, when the connecting shaft 603 rotates, it simultaneously drives the two limit blocks 501 to engage with the limit grooves 502 on the detection bracket 1, which facilitates the quick installation of the horizontal adjustment plate 10 and the detection bracket 1, improving the efficiency of disassembly and assembly. At this time, the hex wrench can be pulled out, causing the two limit rods 604 to engage with the limit holes 605 under the action of the second return spring 607, which facilitates the fixing of the rotated connecting shaft 603 and improves stability.

[0046] At this point, the two mounting blocks 401 can be directly inserted into the horizontal adjustment plate 10. When the inclined surface of the mounting block 401 is inserted into the horizontal adjustment plate 10, the mounting block 401 will drive the pull plate 404 to slide outward, and at the same time the first return spring 403 will retract. When the mounting block 401 is inside the horizontal adjustment plate 10, the mounting block 401 will engage with the mounting groove 402 under the action of the first return spring 403. At this point, the installation of the Renishaw XR-20 mounting ring 11 is completed. Thus, the mounting block 401 facilitates the quick installation of the Renishaw XR-20 mounting ring 11 onto the horizontal adjustment plate 10, improving installation efficiency. (The horizontal adjustment plate 10 is used to adjust the coaxiality accuracy of the horizontal direction with the rotation axis of the A-axis or B-axis, and the Renishaw XR-20 mounting ring 11 is used to adjust the coaxiality accuracy of the vertical direction with the rotation axis of the A-axis or B-axis).

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixture for detecting the rotation angle and accuracy of a five-axis head, characterized in that, The device includes a testing bracket (1), which has a fixing structure (3) for mounting a testing fixture (7); the fixing structure (3) is driven by a driving structure (2); a tool holder (8) is mounted on the testing fixture (7); a Z-axis swing head (9) is mounted on the testing bracket (1); the testing bracket (1) and the horizontal adjustment plate (10) are limited by a limiting structure (5); the horizontal adjustment plate (10) has a pressing structure (6) for driving the limiting structure (5); a Renishaw XR-20 mounting ring (11) is mounted on the horizontal adjustment plate (10) by a mounting structure (4), and a Renishaw XR-20 wireless rotary shaft calibration device (12) is mounted on the Renishaw XR-20 mounting ring (11); The fixing structure (3) includes a rubber block (303). Two rubber blocks (303) are slidably connected to the detection bracket (1). A protrusion (301) is fixedly connected to the rubber block (303). The protrusion (301) engages with the slot (302) on the detection fixing seat (7). A sliding plate (304) is fixedly connected to the rubber block (303). The sliding plate (304) is slidably connected to the detection bracket (1). A sliding rod (305) is fixedly connected to the sliding plate (304). The sliding rod (305) is slidably connected to the detection bracket (1). A connecting column (306) is rotatably connected to the sliding rod (305). The driving structure (2) includes a driving block (201), the driving block (201) is slidably connected to the detection bracket (1), the driving block (201) is provided with two driving grooves (202), the two connecting columns (306) are in rolling engagement with the two driving grooves (202), the two driving grooves (202) are inclined, and a lead screw (204) is rotatably connected to the detection bracket (1), the lead screw (204) is threadedly connected to the driving block (201).

2. The fixture for detecting the rotation angle and accuracy of a five-axis head according to claim 1, characterized in that: A guide rod (307) is fixedly connected to the slide plate (304), and the guide rod (307) is slidably connected to the detection bracket (1).

3. The fixture for detecting the rotation angle and accuracy of a five-axis head according to claim 2, characterized in that: A roller (203) is rotatably connected to the drive block (201), and the roller (203) rolls in cooperation with the detection bracket (1).

4. The fixture for detecting the rotation angle and accuracy of a five-axis head according to claim 1, characterized in that: The limiting structure (5) includes a limiting block (501). Two limiting blocks (501) are slidably connected to the horizontal adjustment plate (10). The two limiting blocks (501) are respectively engaged with two limiting grooves (502) on the detection bracket (1). A driving rod (503) is slidably connected to the horizontal adjustment plate (10). The driving rod (503) is slidably connected to the limiting block (501). The two driving rods (503) are fixedly connected to the connecting plate (504). The connecting plate (504) is slidably connected to the horizontal adjustment plate (10).

5. The fixture for detecting the rotation angle and accuracy of a five-axis head according to claim 4, characterized in that: A boss (505) is fixedly connected to the connecting plate (504). The cross-section of the boss (505) is trapezoidal. The drive rod (503) slides with the inclined surface on the limiting block (501). A tension spring (506) is fixedly connected between the connecting plate (504) and the horizontal adjustment plate (10).

6. The fixture for detecting the rotation angle and accuracy of a five-axis head according to claim 5, characterized in that: The pressing structure (6) includes a connecting shaft (603), which is rotatably connected to the horizontal adjustment disc (10). A connecting rod (602) is fixedly connected to the connecting shaft (603), and a ball bearing (601) is rolled on the connecting rod (602). The ball bearing (601) and the boss (505) are in rolling engagement.

7. The fixture for detecting the rotation angle and accuracy of a five-axis head according to claim 6, characterized in that: Two limiting rods (604) are slidably connected on the connecting shaft (603). The two limiting rods (604) are respectively engaged with the two limiting holes (605) on the horizontal adjustment plate (10). The two limiting rods (604) are fixedly connected to the pressing plate (606).

8. The fixture for detecting the rotation angle and accuracy of a five-axis head according to claim 7, characterized in that: The pressing plate (606) is slidably connected to the connecting shaft (603), and a second return spring (607) is fixedly connected between the pressing plate (606) and the connecting shaft (603).

9. The fixture for detecting the rotation angle and accuracy of a five-axis head according to claim 1, characterized in that: The mounting structure (4) includes mounting blocks (401). Two mounting blocks (401) are slidably connected to the Renishaw XR-20 mounting ring (11). The two mounting blocks (401) are engaged with two mounting slots (402) on the horizontal adjustment plate (10). A first return spring (403) is fixedly connected between the mounting blocks (401) and the Renishaw XR-20 mounting ring (11).

10. The fixture for detecting the rotation angle and accuracy of a five-axis head according to claim 9, characterized in that: Pull plates (404) are slidably connected to the two mounting blocks (401), and the two pull plates (404) are slidably connected to the Renishaw XR-20 mounting ring (11). The cross-section of the pull plates (404) is "L" shaped.

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