A hydraulic indexing plate

Abstract

This invention relates to the field of intelligent indexing plate technology, and particularly to a hydraulic indexing plate, comprising: a base; a rotating seat rotatably connected to the upper surface of the base; multiple main positioning slots formed on the rotating seat and distributed in a ring at equal angles; a clamping and fixing component movably disposed on the rotating seat, located directly above the main positioning slots; and an interference clearance component disposed at the connection between the annular slide rail and the main positioning slots. The hydraulic indexing plate provided by this invention is equipped with a linkage locking component, which simultaneously unlocks the interference clearance component, enabling the clamping and fixing component to quickly adjust its position. This avoids interference while improving operational convenience, realizing intelligent collaborative operation of clamping and positioning. It not only improves the intelligence level and operational convenience of the equipment, effectively avoids spatial interference between the clamping and fixing component and the processing equipment, but also eliminates the potential for interference at its source, thus enhancing the intelligence of the hydraulic indexing plate.

Description

Technical Field

[0001] This invention relates to the field of intelligent indexing plate technology, specifically a hydraulic indexing plate. Background Technology

[0002] An indexing plate is a machine tool accessory that clamps a workpiece on a chuck or between two centers, allowing it to rotate, index, and position. It is often used in automated equipment. The surface of the indexing plate has multiple sets of positioning grooves. During use, positioning frames are installed on the indexing plate through the positioning grooves to achieve positioning and clamping of the workpiece. After the workpiece is fixed by the positioning frame, it can be processed.

[0003] Chinese Patent Publication No. CN117884948A discloses an indexing plate, including a base with a rotating seat rotatably connected to it. The top of the rotating seat has four sets of positioning grooves, and the center of the rotating seat has a mounting groove one and a mounting groove two. An air outlet is slidably inserted into the mounting groove one, and a lifting mechanism for controlling the raising and lowering of the air outlet is provided in the mounting groove two. A gas conveying mechanism for supplying air into the air outlet is provided at the bottom of the air outlet. Through the lifting mechanism and the air outlet, the gas conveying mechanism supplies air into the air outlet, and the air is blown upward through the air outlet one, which is beneficial for cooling the workpiece during processing. After the workpiece is processed and removed, the lifting mechanism drives the air outlet to rise, so that the air outlet two is higher than the top surface of the rotating seat. The gas conveying mechanism supplies air into the air outlet, and the air is blown upward through the air outlet two, which is beneficial for cleaning debris from the top surface of the rotating seat.

[0004] As mentioned in the above application, the existing indexing plate neglects the importance of the interference clearance structure in its design, which makes the workpiece prone to interference during the processing. That is, when the workpiece is fixed by the fixing component set on the indexing plate, the fixing component may interfere with the processing tool. In other words, the fixing component of the existing technology has low intelligence, which affects the processing efficiency and convenience. Summary of the Invention

[0005] To address the aforementioned problems, the present invention provides a hydraulic indexing plate.

[0006] This invention adopts the following technical solution: a hydraulic indexing plate, comprising:

[0007] Base;

[0008] A rotating seat is rotatably connected to the upper surface of the base, and a limit ring is welded to the upper surface of the rotating seat;

[0009] Multiple main positioning slots are provided on the rotating seat and are distributed in a ring at equal angles.

[0010] Multiple auxiliary positioning slots are arranged in a ring at equal angles between two adjacent main positioning slots;

[0011] The clamping and fixing assembly is movably mounted on the rotating seat, located directly above the main positioning groove;

[0012] An annular slide rail is formed on the upper surface of the rotating seat, dividing the main positioning groove and the auxiliary positioning groove into two sections;

[0013] An interference clearance component is provided at the connection between the annular slide rail and the main positioning groove, and the interference clearance component is fixedly connected to the clamping and fixing component.

[0014] The linkage locking component is mounted on the interference clearance component and is connected to the clamping and fixing component in a transmission manner. When the clamping and fixing component performs the workpiece clamping operation, the linkage locking component synchronously drives the interference clearance component to perform fixed positioning.

[0015] As a further description of the above technical solution: the clamping and fixing assembly includes a base, a fixing seat is vertically welded to the upper surface of the base, an electric telescopic rod is embedded in the fixing seat, a clamping block is fixedly installed at one end of the electric telescopic rod, and a strip seat is provided on the lower surface of the clamping block, and the strip seat is slidably connected to the base.

[0016] As a further description of the above technical solution: the interference clearance component includes a positioning seat, which is slidably disposed in an annular slide rail. Grooves are provided on both side walls of the positioning seat along its length direction. The two grooves are staggered with each other. Locking blocks are movably disposed in both grooves. Wedge-shaped linkage blocks are provided on the opposite side of the two locking blocks. Two connecting blocks are vertically welded to both ends of the upper surface of the positioning seat. The top ends of the two connecting blocks are welded and fixed to the lower surface of the base. A driving block is inserted into the center of the upper surface of the positioning seat, and the bottom end of the driving block extends through the top end of the positioning seat and into the interior of the positioning seat.

[0017] As a further description of the above technical solution: a positioning shaft is inserted and fixed on the drive block, and a strip groove is opened on the opposite side of the two connecting blocks along the center line in the vertical direction. The two ends of the positioning shaft are slidably connected to the strip groove, and a strip hole is opened on the top plate of the positioning seat to cooperate with the drive block.

[0018] As a further description of the above technical solution: a limiting groove is provided on both the top plate and the bottom plate inside the groove; a sliding block is provided at the center of the upper and lower surfaces of the locking block; the sliding block is slidably connected to the limiting groove; a return spring is welded to one end of the sliding block; and the other end of the return spring is welded and fixed to the inner wall of the limiting groove.

[0019] As a further description of the above technical solution: the linkage locking assembly includes a wedge block and a transmission block. The wedge block is welded and fixed on the strip seat, and the transmission block is fixed to the upper surface of the drive block. The lower surface of the wedge block and the upper surface of the transmission block are in contact with each other, and the lower surface of the wedge block and the upper surface of the transmission block are adapted oblique surfaces.

[0020] As a further description of the above technical solution: the driving block is composed of an upper part and a lower part, the upper part is a rectangular structure, the lower part is an isosceles trapezoidal structure, and the length of the bottom end of the lower part is less than the length of the top end.

[0021] As a further description of the above technical solution: a strip-shaped notch is provided at the center line along the length direction of the upper surface of the base to cooperate with the wedge block.

[0022] As a further description of the above technical solution: a total of multiple clamping and fixing components are provided, and the multiple clamping and fixing components are distributed in a ring on the rotating seat.

[0023] As a further description of the above technical solution: a rectangular groove is provided on the horizontal centerline along the length direction of the upper surface of the strip seat, and a limiting shaft is inserted and fixed in the rectangular groove along the length direction. An L-shaped block is welded on one side wall of the clamping block, and the vertical end of the L-shaped block is sleeved on the limiting shaft. A support spring is sleeved on the end of the limiting shaft near the clamping block.

[0024] Beneficial effects:

[0025] In the above technical solution, the present invention innovatively introduces an intelligent interlocking mechanism, that is, it is equipped with a linkage locking component. When the clamping and fixing component performs the operation of clamping the workpiece, the linkage locking component simultaneously drives the interference clearance component to fix the position, ensuring stable processing of the workpiece and preventing accidental displacement of the clamping device during operation. When the clamping and fixing component releases the workpiece, the linkage locking component simultaneously unlocks the interference clearance component, enabling the clamping and fixing component to quickly adjust its position, avoiding interference while improving the convenience of operation. It realizes intelligent collaborative operation of clamping and positioning, which not only significantly improves the intelligence level and convenience of equipment operation, but also eliminates the hidden danger of interference from the root, ensuring the safety and stability of equipment operation.

[0026] Secondly, by opening an annular slide rail on the rotating seat and setting an interference clearance component inside the slide rail, the clamping and fixing component is fixedly connected to the interference clearance component. This allows the clamping and fixing component to be flexibly adjusted in position during actual use, so that it avoids the working path of the processing equipment. This effectively avoids the spatial interference problem between the clamping and fixing component and the processing equipment, and improves the safety and stability of the equipment operation. Attached Figure Description

[0027] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0028] Figure 1 This is a schematic diagram of the structure of a hydraulic indexing plate provided in an embodiment of the present invention;

[0029] Figure 2 Provided for embodiments of the present invention Figure 1 Enlarged view of area A in the image;

[0030] Figure 3 This is a schematic diagram of the clamping and fixing assembly provided in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the disassembled structure of the interference clearance component provided in an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the positioning seat provided in an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the driving block provided in an embodiment of the present invention;

[0034] Figure 7 This is a cross-sectional view of the clamping and fixing assembly provided in an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the connection structure between the clamping block and the strip seat provided in an embodiment of the present invention;

[0036] Figure 9 A cross-sectional view of the rotating seat provided in an embodiment of the present invention;

[0037] Figure 10 The embodiments of the present invention provide Figure 9 Enlarged view of area B in the image.

[0038] Reference numerals: 1. Base; 2. Rotating seat; 3. Main positioning groove; 4. Auxiliary positioning groove; 5. Annular slide rail; 6. Limiting ring; 7. Clamping and fixing assembly; 71. Base; 72. Fixing seat; 73. Electric telescopic rod; 74. Clamping block; 75. Strip seat; 751. Rectangular groove; 752. L-shaped block; 753. Limiting shaft; 754. Support spring; 8. Interference clearance assembly; 81. Positioning seat; 82. Groove; 83. Limiting slide groove; 84. Locking block; 85. Sliding block; 86. Return spring; 87. Connecting block; 88. Driving block; 89. Strip groove; 810. Positioning shaft; 811. Wedge linkage block; 9. Linkage locking assembly; 91. Wedge block; 92. Transmission block. Detailed Implementation

[0039] To make the technical means, creative features, objectives, and effects of this invention readily understandable, the invention is further described below with reference to specific illustrations. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0040] Example 1

[0041] Please see Figures 1-3 The present invention provides a technical solution: a hydraulic indexing plate, comprising:

[0042] Base 1; wherein the bottom of the base 1 is provided with a fixing seat 72, and fixing holes are provided at the four corners of the upper surface of the fixing seat 72. The fixing holes are used in conjunction with fastening bolts to install and fix the base 1.

[0043] Rotary seat 2 is rotatably connected to the upper surface of base 1, and a limit ring 6 is welded to the upper surface of rotating seat 2; rotating seat 2 has a disc-shaped structure.

[0044] Multiple main positioning grooves 3 are provided on the rotating seat 2 and are distributed in a ring at equal angles. The grooves are provided from the outer ring of the rotating seat 2 toward the axis of the rotating seat 2. The length of the main positioning groove 3 is less than the radius of the rotating seat 2.

[0045] Multiple auxiliary positioning grooves 4 are arranged between two adjacent main positioning grooves 3 in a ring at equal angles; their opening direction is from the outer ring of the rotating seat 2 towards the axis of the rotating seat 2, and the length of the auxiliary positioning groove 4 is less than the radius of the rotating seat 2.

[0046] The clamping and fixing assembly 7 is movably mounted on the rotating seat 2 and is located directly above the main positioning groove 3;

[0047] The annular slide rail 5, which is formed on the upper surface of the rotating seat 2, divides the main positioning groove 3 and the auxiliary positioning groove 4 into two sections.

[0048] The interference clearance component 8 is located at the connection between the annular slide rail 5 and the main positioning groove 3, and the interference clearance component 8 and the clamping and fixing component 7 are fixedly connected to each other.

[0049] The linkage locking component 9 is mounted on the interference clearance component 8 and is connected to the clamping and fixing component 7 in a transmission manner. When the clamping and fixing component 7 performs the workpiece clamping operation, the linkage locking component 9 synchronously drives the interference clearance component 8 to perform fixed positioning.

[0050] Specifically, in use, the workpiece to be fixed is placed at the center of the rotating seat 2. The working path of the processing equipment is obtained in advance, and the clamping and fixing component 7 located on the working path is adjusted so that it does not interfere with the processing equipment. The clamping and fixing component 7 is adjusted by pushing the interference clearance component 8 to move within the annular slide rail 5, thereby moving the clamping and fixing component 7 to avoid the working path of the processing equipment. At this time, the workpiece is fixed by the clamping and fixing component 7. When the clamping and fixing component 7 clamps and fixes the workpiece, the linkage locking component 9 simultaneously drives the interference clearance component 8 to fix and position it, thus achieving the positioning and fixing of the interference clearance component 8 and ensuring the stability of the clamping and fixing component 7. Conversely, when the clamping and fixing component 7 does not clamp and fix the workpiece, the linkage locking component 9 simultaneously drives the interference clearance component 8 to unlock it. Thus, the position of the clamping and fixing component 7 can be adjusted by the interference clearance component 8 to avoid the working path of the processing equipment and prevent interference with the processing equipment.

[0051] Example 2

[0052] Please see Figures 1-4 and Figure 7 Based on the above embodiments, this embodiment further discloses the specific structure of the clamping and fixing component 7. Preferably, the clamping and fixing component 7 includes a base 71, a fixing seat 72 is vertically welded to the upper surface of the base 71, an electric telescopic rod 73 is embedded in the fixing seat 72, a clamping block 74 is fixedly installed at the other end of the electric telescopic rod 73, a strip seat 75 is provided on the lower surface of the clamping block 74, and the strip seat 75 is slidably connected to the base 71. A total of several clamping and fixing components 7 are provided, and the several clamping and fixing components 7 are arranged in a ring on the rotating seat 2.

[0053] Specifically, in this embodiment, the specific structure of the clamping and fixing component 7 is further disclosed. In use, the workpiece to be fixed is placed at the center of the upper surface of the rotating seat 2, and the electric telescopic rod 73 is extended to drive the clamping block 74 to move. The workpiece located at the center of the rotating seat 2 is clamped and fixed by a number of clamping blocks 74.

[0054] Example 3

[0055] Please see Figures 4-7Based on the above embodiments, this embodiment further discloses the specific structure of the interference clearance component 8. The interference clearance component 8 includes a positioning seat 81, which is slidably disposed in the annular slide rail 5. Grooves 82 are provided on both side walls of the positioning seat 81 along the length direction. The two grooves 82 are staggered with each other. Locking blocks 84 are movably disposed in both grooves 82. Wedge-shaped linkage blocks 811 are provided on the opposite side of the two locking blocks 84. Two connecting blocks 87 are vertically welded to both ends of the upper surface of the positioning seat 81. The top ends of the two connecting blocks 87 are welded and fixed to the lower surface of the base 71. A driving block 88 is inserted into the center of the upper surface of the positioning seat 81, and the bottom end of the driving block 88 extends through the top end of the positioning seat 81 and into the interior of the positioning seat 81.

[0056] A positioning shaft 810 is inserted and fixed on the drive block 88. A strip groove 89 is provided on the opposite side of the two connecting blocks 87 along the center line in the vertical direction. The two ends of the positioning shaft 810 are slidably connected to the strip groove 89. A strip hole is provided on the top plate of the positioning seat 81 to cooperate with the drive block 88.

[0057] In this embodiment, the interference clearance component 8 is disposed in the annular slide rail 5 and is fixedly connected to the clamping and fixing component 7. In use, the position of the clamping and fixing component 7 can be adjusted by controlling the interference clearance component 8 to avoid the working path of the processing equipment.

[0058] Specifically, the method by which the interference clearance component 8 drives the clamping and fixing component 7 to adjust its position is as follows: the base 71 pushes the positioning seat 81 to move within the annular slide rail 5, thereby adjusting the position of the positioning seat 81. This allows the positioning seat 81 to move from the connection between the main positioning groove 3 and the annular slide rail 5 to the connection between the auxiliary positioning groove 4 and the annular slide rail 5. The positioning seat 81 then drives the clamping and fixing component 7 to move, thereby adjusting the position of the clamping and fixing component 7.

[0059] Example 4

[0060] Please see Figures 1-10 Based on the above embodiments, this embodiment further discloses the specific structure of the linkage locking component 9. The linkage locking component 9 includes a wedge block 91 and a transmission block 92. The wedge block 91 is welded and fixed on the strip seat 75, and the transmission block 92 is fixed to the upper surface of the drive block 88. The lower surface of the wedge block 91 and the upper surface of the transmission block 92 are in contact with each other, and the lower surface of the wedge block 91 and the upper surface of the transmission block 92 are adapted oblique surfaces.

[0061] Limiting grooves 83 are provided on the top and bottom plates inside the groove 82. Sliding blocks 85 are provided at the center of the upper and lower surfaces of the locking block 84. The sliding blocks 85 are slidably connected to the limiting grooves 83. A return spring 86 is welded to one end of the sliding block 85, and the other end of the return spring 86 is welded and fixed to the inner wall of the limiting groove 83.

[0062] It should be noted that the return spring 86 is a tension spring. In the initial state, under the tension of the return spring 86, the sliding block 85 is pulled to the end where the return spring 86 is located, so that both locking blocks 84 are retracted in the groove 82. That is, in the initial state, the locking blocks 84 are located in the groove 82 under the tension of the return spring 86, so that the entire interference clearance assembly 8 is located in the annular slide rail 5 and can move in the annular slide rail 5. When the drive block 88 moves down, it squeezes and pushes the two wedge linkage blocks 811 to move. The two wedge linkage blocks 811 respectively drive the two locking blocks 84 to extend out of the groove 82. At this time, the return spring 86 is in a stretched state, and the two locking blocks 84 extend into the main positioning groove 3 or the auxiliary positioning groove 4, limiting the entire interference clearance assembly 8, so that the entire interference clearance assembly 8 cannot move in the annular slide rail 5.

[0063] The drive block 88 consists of an upper part and a lower part. The upper part is a rectangular structure and the lower part is an isosceles trapezoidal structure, with the length of the bottom end of the lower part being less than the length of the top end.

[0064] The upper surface of the base 71 has a strip-shaped notch at the center line along the length direction for use with the wedge block 91.

[0065] A rectangular groove 751 is provided on the horizontal centerline along the length direction of the upper surface of the strip seat 75. A limiting shaft 753 is inserted and fixed in the rectangular groove 751 along the length direction. An L-shaped block 752 is welded on one side wall of the clamping block 74. The vertical end of the L-shaped block 752 is sleeved on the limiting shaft 753. A support spring 754 is sleeved on the end of the limiting shaft 753 near the clamping block 74.

[0066] In this embodiment, based on the above embodiment, when the position of the clamping and fixing component 7 is adjusted, after the adjustment is completed, when the clamping and fixing component 7 performs the workpiece clamping operation, the linkage locking component 9 synchronously drives the interference clearance component 8 to perform fixed positioning in the following way: when the clamping and fixing component 7 performs the workpiece clamping operation, it is first necessary to control the extension of the electric telescopic rod 73 to drive the clamping block 74 to move. When the electric telescopic rod 73 extends, it synchronously drives the wedge block 91 to move. The movement of the wedge block 91 squeezes the transmission block 92 to move downward. The movement of the transmission block 92 synchronously drives the drive block 88 to move downward, pushing the two wedge linkage blocks 811 to move. When the two wedge-shaped linkage blocks 811 are activated, they respectively drive the two locking blocks 84 to extend out from the groove 82, so that the two locking blocks 84 extend into the main positioning groove 3 or the auxiliary positioning groove 4 respectively, thereby fixing the interference clearance component 8. That is, when the clamping and fixing component 7 performs the clamping operation, the linkage locking component 9 simultaneously drives the interference clearance component 8 to fix and position it. When the clamping and fixing component 7 releases the workpiece, the linkage locking component 9 simultaneously drives the interference clearance component 8 to unlock it, so that the clamping and fixing component 7 can be conveniently and quickly adjusted in position, avoiding interference with the workpiece processing equipment.

[0067] It should be noted that the extension of the electric telescopic rod 73 drives the clamping block 74 to move. When the electric telescopic rod 73 extends, the clamping block 74 synchronously drives the wedge block 91 to move via the strip seat 75. It has two working strokes. The first stroke is as follows: the electric telescopic rod 73 extends and drives the clamping block 74 to move. At this time, under the elastic support of the support spring 754, the clamping block 74 pushes the strip seat 75 to move via the L-shaped block 752. The strip seat 75 drives the wedge block 91 to move. When the wedge block 91 moves to the other end of the strip notch on the upper surface of the base 71, the first stroke ends. At this time, when the clamping block 74 continues to extend... When the extension rod 73 moves, the wedge block 91 begins its second working stroke. The second working stroke is as follows: the wedge block 91 remains stationary at the end of the first stroke. At this time, as the clamping block 74 moves, the L-shaped block 752 moves on the limiting shaft 753, and the support spring 754 is compressed and retracted. Through this structural design, on the one hand, the movement stroke of the clamping block 74 is maximized, avoiding the restriction of the linkage locking component 9 from affecting the movement stroke of the clamping block 74. On the other hand, in conjunction with the setting of the support spring 754, the movement of the clamping block 74 can be limited and buffered to a certain extent, improving the stability of clamping and fixing.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic index plate, characterized in that, Include: Base (1); Rotary seat (2), rotationally connected to the upper surface of the base (1), the upper surface of the rotary seat (2) is welded with a limit ring (6); A plurality of main positioning grooves (3) are provided on the rotary seat (2) and are annularly and equiangularly distributed; A plurality of auxiliary positioning grooves (4) are provided between two adjacent main positioning grooves (3) and are annularly and equiangularly distributed; Clamping and fixing assembly (7) movably arranged on the rotary seat (2); Annular slide rail (5) is provided on the upper surface of the rotary seat (2), which divides the main positioning groove (3) and the auxiliary positioning groove (4) into two sections; Interference and displacement assembly (8) is arranged on the annular slide rail (5), and the interference and displacement assembly (8) and the clamping and fixing assembly (7) are fixedly connected with each other; Linkage locking assembly (9) is arranged on the interference and displacement assembly (8) and is in transmission connection with the clamping and fixing assembly (7), when the clamping and fixing assembly (7) performs clamping workpiece operation, the linkage locking assembly (9) synchronously drives the interference and displacement assembly (8) to carry out fixed positioning, when the clamping and fixing assembly (7) releases the workpiece clamping, the linkage locking assembly (9) synchronously unlocks the interference and displacement assembly (8), so that the clamping and fixing assembly (7) can quickly adjust the position; The interference and displacement assembly (8) comprises a positioning seat (81), the positioning seat (81) is slidably arranged in the annular slide rail (5), recesses (82) are formed in the two side walls of the positioning seat (81) along the length direction, the two recesses (82) are mutually offset, locking blocks (84) are movably arranged in the two recesses (82), wedge-shaped linkage blocks (811) are arranged on the opposite sides of the two locking blocks (84), two connecting blocks (87) are vertically welded on the upper surface of the positioning seat (81), the top ends of the two connecting blocks (87) are welded and fixed with the lower surface of the base (71), a driving block (88) is inserted into the center of the upper surface of the positioning seat (81), and the bottom end of the driving block (88) extends into the interior of the positioning seat (81) through the top end of the positioning seat (81); The linkage locking assembly (9) comprises a wedge-shaped block (91) and a transmission block (92), the wedge-shaped block (91) is welded and fixed on the strip-shaped seat (75), the transmission block (92) is fixedly connected to the upper surface of the driving block (88), the lower surface of the wedge-shaped block (91) and the upper surface of the transmission block (92) are mutually matched, and the lower surface of the wedge-shaped block (91) and the upper surface of the transmission block (92) are matching inclined surfaces; The clamping and fixing assembly (7) comprises a base (71), a fixed seat (72) is vertically welded on the upper surface of the base (71), an electric telescopic rod (73) is embedded and mounted on the fixed seat (72), a clamping block (74) is fixedly mounted on one end of the electric telescopic rod (73), a strip-shaped seat (75) is arranged on the lower surface of the clamping block (74), and the strip-shaped seat (75) is in sliding connection with the base (71); A rectangular slot (751) is arranged on the horizontal middle line of the upper surface of the strip-shaped seat (75) along the length direction, a limiting shaft (753) is inserted and fixed in the rectangular slot (751) along the length direction, an L-shaped block (752) is welded on one side wall of the clamping block (74), the vertical end of the L-shaped block (752) is sleeved on the limiting shaft (753), and the limiting shaft (753) is sleeved with a supporting spring (754) at one end close to the clamping block (74).

2. A hydraulic index plate according to claim 1, characterised in that A positioning shaft (810) is inserted and fixed on the driving block (88), strip-shaped slots (89) are arranged on the opposite sides of the two connecting blocks (87) along the vertical center line, the two ends of the positioning shaft (810) are in sliding connection with the strip-shaped slots (89), and a strip-shaped hole is arranged on the top plate of the positioning seat (81) for matching the driving block (88).

3. A hydraulic index plate according to claim 1, wherein Limiting sliding grooves (83) are arranged on the inner top plate and the inner bottom plate of the groove (82), sliding blocks (85) are arranged on the upper surface and the lower surface of the locking block (84), the sliding blocks (85) are in sliding connection with the limiting sliding grooves (83), reset springs (86) are welded on one end of the sliding blocks (85), and the other end of the reset springs (86) is welded and fixed with the inner wall of the limiting sliding grooves (83).

4. A hydraulic index plate according to claim 1, wherein The driving block (88) is composed of an upper part and a lower part, the upper part is of a rectangular structure, the lower part is of an isosceles trapezoidal structure, and the length of the bottom end of the lower part is less than the length of the top end.

5. A hydraulic index plate according to claim 1, wherein A strip-shaped gap is arranged on the upper surface of the base (71) along the center line of the length direction for matching the wedge-shaped block (91).

6. A hydraulic index plate according to claim 1, wherein A plurality of clamping and fixing assemblies (7) are arranged on the rotating seat (2) in a ring shape.

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