Hydraulic indexing chuck

Abstract

The utility model discloses a hydraulic indexing chuck which comprises a chuck body and is characterized by further comprising an indexing plate, the indexing plate is rotationally arranged in the chuck body, and the upper section and the lower section of the indexing plate are a cube and a hexagonal star respectively; the rotating ejector rod is fixedly arranged in the chuck body and is used for driving the hexagonal star body to rotate; the fixed ejector rod is fixedly arranged in the chuck body and is used for positioning the 60-degree rotation of the hexagonal star body; the indexing assembly is used for driving the cube to rotate or positioning the cube, the section of the hexagonal star body is in a hexagonal star shape, the indexing plate is divided into the cube and the hexagonal star body, and the hexagonal star body is conveniently driven to rotate by 60 degrees through cooperation of the rotating ejector rod, the fixed ejector rod and the hexagonal star body; therefore, the dividing plate rotates by 60 degrees, and trisection or six-section products can be conveniently machined through one-time clamping.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic indexing chucks, in particular to a hydraulic indexing chuck. Background Art

[0002] The hydraulic indexing chuck is a fixture used in machine tool processing. It is used to position and fix the workpiece for precise cutting, drilling, milling and other processing operations. It provides power through the hydraulic system to achieve the rotation and indexing of the workpiece (i.e., dividing it according to a certain angle), so that the workpiece can be processed at different positions.

[0003] When the existing hydraulic indexing chuck is indexing, two hydraulically controlled piston push rods inside the chuck body are usually used to press the indexing plate connected to the lower clamping claw to perform indexing. The cross-section of the indexing plate is usually square, so only 8*45° angle indexing can be performed. When processing a product divided into three or six equal parts, it is necessary to repeatedly clamp the tooling fixture for processing. It is impossible to process the product divided into three or six equal parts in one clamping, which wastes processing time. Summary of the invention

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a hydraulic indexing chuck, comprising a chuck body, characterized in that it also includes:

[0005] A dividing plate, the dividing plate is rotatably arranged in the chuck body, and the upper and lower sections of the dividing plate are respectively a cube and a hexagram;

[0006] A rotating push rod, which is fixedly disposed in the chuck body and is used to drive the hexagram body to rotate;

[0007] A fixed push rod, which is fixedly arranged in the chuck body and is used to position the hexagram body for 60° rotation;

[0008] An indexing assembly, used to drive the cube to rotate or locate the position of the cube;

[0009] Wherein, the cross section of the hexagram body is in the shape of a hexagram.

[0010] Furthermore, it also includes:

[0011] Tip angles: the outer periphery of the hexagram has six equally spaced tip angles, and the midline angle between two adjacent tip angles is 60°;

[0012] Concave angles, wherein concave angles are formed between adjacent tip angles;

[0013] Among them, after the piston rod of the rotating push rod pushes the tip angle of the hexagram body corresponding to the current position of the rotating push rod to drive the hexagram body to rotate, the inclined surface between one of the recessed angles of the hexagram body and the tip angle will correspond to the piston rod end of the fixed push rod; after the piston rod of the fixed push rod is pressed against the recessed angle of the hexagram body along the inclined surface, the next tip angle of the hexagram body is set corresponding to the rotating push rod.

[0014] Furthermore, it also includes:

[0015] Cone angle: the piston rod end of the fixed push rod has a cone angle, and the angle of the cone angle matches the concave angle of the hexagram.

[0016] Furthermore, it also includes:

[0017] The circular grooves are arranged in a number matching the concave angles, the circular grooves are arranged at the vertices of the concave angles, and the circular grooves are connected with the concave angles.

[0018] Furthermore, the indexing component comprises:

[0019] A first push rod, which is fixedly disposed in the chuck body and is used to position the cube for 45° rotation;

[0020] A second push rod, which is fixedly disposed in the chuck body and is used to position the cube for 90° rotation;

[0021] Among them, the piston rod ends of the first push rod and the second push rod are both provided with inclined surfaces. When the inclined surface of the piston rod end of the first push rod is pressed against the surface of the cube, the cube will rotate 45°. When the inclined surface of the piston rod end of the second push rod is pressed against the surface of the cube, the cube will rotate another 45° on the basis of the above.

[0022] Furthermore, it also includes:

[0023] A clamping groove, which is provided on the chuck body, and is connected to the end surface of the chuck body, and the clamping groove divides the chuck body into two parts, an upper part and an lower part;

[0024] A clamping piston, the clamping piston being fixedly disposed inside the upper portion of the chuck body;

[0025] An upper clamping claw, wherein the piston rod end of the clamping piston is fixedly and rotatably connected to one end of the upper clamping claw.

[0026] A lower clamping jaw, the indexing plate is fixedly rotatably arranged inside the lower part of the chuck body, and the lower clamping jaw is fixedly connected to the upper end of the indexing plate;

[0027] Wherein, the clamping jaw parts of the upper clamping jaw and the lower clamping jaw are both located in the clamping groove and are arranged opposite to each other, and the positions of the upper clamping jaw and the lower clamping jaw are arranged correspondingly.

[0028] Furthermore, the upper clamping jaw and the clamping piston as well as the lower clamping jaw and the dividing plate are detachably connected via stepped screws.

[0029] Furthermore, it also includes:

[0030] Countersunk holes are provided at the opposite ends of the upper clamping jaw and the lower clamping jaw, and the screw heads of the step screws are located in the countersunk holes.

[0031] The beneficial effects of the utility model are:

[0032] 1. By dividing the dividing plate into a cube and a hexagram, the hexagram can be driven to rotate 60° by the cooperation of the rotating push rod, the fixed push rod and the hexagram, so that the dividing plate can be rotated 60°, which is convenient for processing three or six equal parts of products in one clamping. When 60-degree indexing is not required, the cube can be driven to rotate or the position of the cube can be positioned through the indexing assembly, so as to perform 90-degree indexing.

[0033] 2. The setting of the tip angle and the recessed angle makes the midline angles of two adjacent tip angles and recessed angles both 60 degrees, which is convenient for switching the hexagram body to 60 degrees by pressing against different adjacent recessed angles after the rotating push rod drives the hexagram body to rotate. At the same time, there is an inclined surface between the tip angle and the recessed angle, which makes it convenient for the piston rod end of the fixed push rod to drive the hexagram body to rotate slightly through the inclined surface transition in the process of pressing against the recessed angle, thereby making the 60° rotation of the hexagram body accurate.

[0034] 3. By setting the cone angle, it is convenient to match the cone angle with the concave angle of the hexagram body, so that after the piston rod end of the fixed push rod is pressed against the concave angle of the hexagram body, the cone angle part can be firmly stuck in the concave angle to prevent the hexagram body from deflecting.

[0035] 4. By setting the circular groove, after the piston rod end of the fixed push rod is pressed against the recessed angle of the hexagram body, when the cone angle part is firmly stuck in the recessed angle, the tip of the cone angle can be located in the circular groove, avoiding rigid impact between the tip of the cone angle and the tip of the recessed angle, which may cause damage to the tip of the cone angle.

[0036] 5. By setting the first push rod, the second push rod and the cube, when the dividing plate needs to be indexed by 45° or 90°, the rotating push rod and the fixed push rod can be retracted, and the cube can be rotated 45° by alternatingly switching the first push rod and the second push rod, thereby driving the dividing plate to switch to 45° indexing, so that the dividing plate can switch to 45° while having 60° indexing, making the application range wider and the processing faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Attached Figure 1 It is a cross-sectional view of the utility model;

[0038] Attached Figure 2 For attachment Figure 1 A schematic cross-sectional view of the middle BB;

[0039] Attached Figure 3 A schematic diagram of a rotating mandrel driving the hexagram to rotate;

[0040] Attached Figure 4 A schematic diagram showing that after the rotating push rod drives the hexagram body to rotate, the fixed push rod corresponds to the inclined plane between the tip angle and the recessed angle;

[0041] Attached Figure 5 A schematic diagram of fixing the ejector rod against the recessed corner;

[0042] Attached Figure 6 For attachment Figure 1 Schematic cross-sectional view of AA in the figure;

[0043] Explanation of the reference numerals: 1. chuck body, 2. dividing plate, 3. rotating push rod, 4. fixed push rod, 5. tip angle, 6. recess angle, 7. cone angle, 8. circular groove, 9. first push rod, 10. second push rod, 11. clamping groove, 12. clamping piston, 13. upper clamping jaw, 14. lower clamping jaw, 15. stepped screw, 16. countersunk hole, 17. hexagram, 18. cube. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work belong to the scope of protection of the present application. In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values, and it should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. Example 1

[0045] This embodiment provides a hydraulic indexing chuck, comprising a chuck body 1, characterized in that it also includes:

[0046] A dividing plate 2, the dividing plate 2 is rotatably arranged in the chuck body 1, and the upper and lower sections of the dividing plate 2 are respectively a cube 18 and a hexagram 17;

[0047] A rotating push rod 3, which is fixedly disposed in the chuck body 1 and is used to drive the hexagram body 17 to rotate;

[0048] A fixed push rod 4, which is fixedly disposed in the chuck body 1 and is used to position the six-pointed star body 17 for a 60° rotation;

[0049] An indexing assembly, used to drive the cube 18 to rotate or to locate the position of the cube 18;

[0050] The cross section of the hexagram body 17 is in the shape of a hexagram.

[0051] In the present technical solution, the indexing plate 2 is divided into a cube 18 and a hexagram body 17. Since the cross section of the hexagram body 17 is a hexagram shape, each angle of the hexagram is 60°. When the indexing plate 2 needs to be driven to rotate 60 degrees, the rotating push rod 3 and the fixed push rod 4 can be driven by a control oil circuit (not shown in the figure). The rotating push rod 3 and the fixed push rod 4 are both hydraulically controlled (driving the rotating push rod 3 and the fixed push rod 4 by controlling the oil circuit is a prior art and will not be described in detail here).

[0052] First, the rotating push rod 3 is started, so that the piston rod end of the rotating push rod 3 moves toward the hexagram 17, thereby pushing the hexagram 17 to rotate. After the rotation, the piston rod of the rotating push rod 3 is retracted, and the fixed push rod 4 is started. The piston rod end of the fixed push rod 4 will drive the hexagram 17 to rotate slightly during the contact process with the hexagram 17. After the piston rod end of the fixed push rod 4 is tightly pressed against the hexagram 17, the hexagram 17 will be limited to a rotation angle of 60°, so that the hexagram 17 is relatively rotated 60° relative to the previous state;

[0053] When the piston rod end of the fixed push rod 4 is pressed against the hexagram 17, the rotation of the hexagram 17 will be fixed, so that the dividing plate 2 can be divided by 60°. At the same time, when there is no need to divide by 60°, the fixed push rod 4 and the rotating push rod 3 can be retracted to release the rotation restriction of the dividing plate 2, and then the cube 18 can be driven to rotate or the position of the cube 18 can be positioned through the dividing assembly, so that 90° division can also be performed.

[0054] Through this structural design, the dividing plate 2 is divided into a cube 18 and a hexagram 17, and the hexagram 17 is conveniently driven to rotate 60° through the cooperation of the rotating top rod 3, the fixed top rod 4 and the hexagram 17, so that the dividing plate 2 can be rotated 60°, which is convenient for processing three or six equal parts of the product with one clamping. When 60 degree division is not required, the dividing assembly can also be used to drive the cube 18 to rotate or locate the position of the cube 18, so as to perform 90 degree division. Example 2

[0055] This embodiment provides a hydraulic indexing chuck, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0056] Furthermore, it also includes:

[0057] Tip angles 5, the outer periphery of the hexagram 17 has six equally divided tip angles 5, and the midline angle between two adjacent tip angles 5 is 60°;

[0058] A recessed corner 6 is formed between adjacent tip corners 5;

[0059] Among them, after the piston rod of the rotating push rod 3 pushes the tip corner 5 of the hexagram 17 corresponding to the current position of the rotating push rod 3 to drive the hexagram 17 to rotate, the inclined surface between one of the recessed corners 6 of the hexagram 17 and the tip corner 5 will correspond to the piston rod end of the fixed push rod 4. After the piston rod of the fixed push rod 4 is pressed against the recessed corner 6 of the hexagram 17 along the inclined surface, the next tip corner 5 of the hexagram 17 is set corresponding to the rotating push rod 3.

[0060] In the technical solution, after the piston rod end of the fixed push rod 4 is pressed against the concave angle 6 of the hexagram 17, when it is necessary to continue the 60-degree indexing, the piston rod end of the fixed push rod 4 is first retracted to release the pressing against the hexagram 17. Since the piston rod of the fixed push rod 4 is pressed against the concave angle 6 of the hexagram 17 along the inclined surface, the next tip angle 5 of the hexagram 17 is set corresponding to the rotating push rod 3.

[0061] Then, the rotating push rod 3 is started, and the piston rod end of the rotating push rod 3 moves toward the side of the current tip angle 5 of the hexagram 17 corresponding to the rotating push rod 3, so that the hexagram 17 is pushed to rotate by the resistance against the side of the tip angle 5. Since the piston rod of the rotating push rod 3 pushes the tip angle 5 of the hexagram 17 corresponding to the current position of the rotating push rod 3 to drive the hexagram 17 to rotate, the inclined surface between the concave angle 6 of the hexagram 17 and the tip angle 5 will correspond to the piston rod end of the fixed push rod 4, so that the inclined surface between the next concave angle 6 of the hexagram 17 and the tip angle 5 will correspond to the piston rod end of the fixed push rod 4;

[0062] Then, the fixed push rod 4 is started, and the piston rod end of the fixed push rod 4 first contacts the inclined surface between the concave angle 6 and the tip angle 5 of the hexagram 17. Then, as the piston rod end of the fixed push rod 4 continues to move, it can transition through the inclined surface, driving the hexagram 17 to rotate slightly until the concave angle 6 of the hexagram 17 corresponds to the piston rod end of the push rod, and then the piston rod end of the fixed push rod 4 is pressed against the current concave angle 6.

[0063] Since the outer circumference of the hexagram 17 has six equally divided tip angles 5, the midline angle between two adjacent tip angles 5 is 60°, and the recessed angle 6 is formed by the two adjacent tip angles 5, the angle between two adjacent recessed angles 6 will also be 60 degrees. Therefore, when the fixed push rod 4 leaves the previous recessed angle 6, the rotating push rod 3 drives the hexagram 17 to rotate, and after the fixed push rod 4 is pressed against the current recessed angle 6, the hexagram 17 will also rotate 60 degrees, thereby driving the dividing plate 2 to rotate 60 degrees.

[0064] Through the structural design, the setting of the tip angle 5 and the recessed angle 6 makes the midline angles of the two adjacent tip angles 5 and recessed angles 6 both 60 degrees, which is convenient for the 60-degree indexing switching by pressing against different adjacent recessed angles 6 after the rotating push rod 3 drives the hexagram 17 to rotate. At the same time, there is an inclined surface between the tip angle 5 and the recessed angle 6, which is convenient for the piston rod end of the fixed push rod 4 to drive the hexagram 17 to rotate slightly through the inclined surface transition in the process of pressing against the recessed angle 6, so that the 60° rotation of the hexagram 17 is accurate.

[0065] The steps of rotating the hexagram 17 by 60° are as follows:

[0066] Start the rotating push rod 3 (at this time, ensure that the fixed push rod 4 is in the retracted state), the rotating push rod 3 pushes the tip corner 5 of the hexagram 17 to drive the hexagram 17 to rotate. After the rotation, the slope between the next concave corner 6 of the hexagram 17 and the tip corner 5 will correspond to the piston rod end of the fixed push rod 4;

[0067] The rotating ejector rod 3 is retracted and the fixed ejector rod 4 is started, so that the piston rod end of the fixed ejector rod 4 moves toward the inclined surface between the recessed angle 6 and the tip angle 5 mentioned above.

[0068] After the piston rod end of the fixed push rod 4 contacts the inclined surface between the recessed angle 6 and the tip angle 5 and continues to move, the six-pointed star 17 will be driven to rotate slightly through the inclined surface transition;

[0069] The piston rod of the fixed push rod 4 drives the hexagram 17 to rotate slightly until the above-mentioned concave angle 6 corresponds to the piston rod end of the fixed push rod 4, and then the concave angle 6 can be pressed tightly to complete the 60-degree division of the hexagram 17;

[0070] After the piston rod of the fixed push rod 4 is pressed against the recessed corner 6 of the hexagram 17 along the inclined surface, the next tip corner 5 of the hexagram 17 is set corresponding to the rotating push rod 3. When it is necessary to continue the 60° indexing, the fixed push rod 4 is retracted and steps 1-4 are repeated. Example 3

[0071] This embodiment provides a hydraulic indexing chuck, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] Furthermore, it also includes:

[0073] Cone angle 7 , the piston rod end of the fixed push rod 4 has a cone angle 7 , and the angle of the cone angle 7 matches the recess angle 6 of the hexagram 17 .

[0074] In the present technical solution, by setting the cone angle 7, it is convenient to cooperate with the concave angle 6 of the hexagram 17, so that after the piston rod end of the fixed push rod 4 is pressed against the concave angle 6 of the hexagram 17, the cone angle 7 part can be firmly stuck in the concave angle 6 to prevent the hexagram 17 from deflecting. Example 4

[0075] This embodiment provides a hydraulic indexing chuck, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0076] Furthermore, it also includes:

[0077] The circular grooves 8 are matched in number with the recessed corners 6 . The circular grooves 8 are opened at the vertices of the recessed corners 6 . The circular grooves 8 are connected with the recessed corners 6 .

[0078] In the present technical solution, by setting the circular groove 8, after the piston rod end of the fixed push rod 4 is pressed against the recessed angle 6 of the hexagram body 17, when the cone angle 7 is firmly stuck in the recessed angle 6, the tip of the cone angle 7 can be located in the circular groove 8, thereby avoiding rigid impact between the tip of the cone angle 7 and the tip of the recessed angle 6, which may cause damage to the tip of the cone angle 7. Example 5

[0079] This embodiment provides a hydraulic indexing chuck, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0080] Furthermore, the indexing component comprises:

[0081] A first push rod 9, which is fixedly disposed in the chuck body 1 and is used to position the cube 18 for a 45° rotation;

[0082] A second push rod 10, which is fixedly disposed in the chuck body 1 and is used to position the cube 18 for 90° rotation;

[0083] Among them, the piston rod ends of the first push rod 9 and the second push rod 10 are both provided with inclined surfaces. When the inclined surface of the piston rod end of the first push rod 9 is pressed against the surface of the cube 18, the cube 18 will rotate 45°. When the inclined surface of the piston rod end of the second push rod 10 is pressed against the surface of the cube 18, the cube 18 will rotate another 45° on the basis of the above.

[0084] In the present technical solution, by providing the first push rod 9 and the second push rod 10, when the indexing plate 2 needs to be indexed by 45° or 90°, the operation steps are as follows:

[0085] Retract the rotating top rod 3 and the fixed top rod 4, because the rotation of the cube 18 will drive the hexagram 17 to rotate, so as to avoid interference;

[0086] The first push rod 9 is started (at this time, the second push rod 10 is ensured to be in the retracted state), and the piston rod of the first push rod 9 moves toward the corner of the cube 18, thereby pushing the corner of the cube 18 to drive the cube 18 to rotate;

[0087] As the cube 18 rotates, the plane of the cube 18 will gradually correspond to the inclined surface of the first push rod 9, and then after the first push rod 9 is pressed against the cube 18, the inclined surface of the first push rod 9 will also be pressed against the surface plane of the cube 18, and at this time the cube 18 rotates 45 degrees;

[0088] When it is necessary to rotate another 45° on the basis of the above, the first push rod 9 is retracted, and the second push rod 10 is started. The piston rod of the second push rod 10 moves toward the corner of the cube 18, thereby pushing the corner of the cube 18 to drive the cube 18 to rotate;

[0089] As mentioned above, as the cube 18 rotates, the plane of the cube 18 will gradually correspond to the inclined surface of the second push rod 10, and then after the second push rod 10 is pressed against the cube 18, the inclined surface of the second push rod 10 will also be pressed against the surface plane of the cube 18. At this time, the cube 18 is rotated 45° on the basis of step 3, so that the cube 18 is rotated 90° compared to the beginning, thereby causing the dividing plate 2 to rotate 90° compared to the beginning.

[0090] If you need to rotate it another 45° based on step 5, repeat steps 2-3. If you need to rotate it another 90° based on step 5, repeat steps 2-5.

[0091] Through this structural design, by setting the first push rod 9, the second push rod 10 and the cube 18, when the dividing plate 2 needs to be divided by 45° or 90°, the rotating push rod 3 and the fixed push rod 4 can be retracted, and the cube 18 can be rotated 45° by alternatingly switching the first push rod 9 and the second push rod 10, thereby driving the dividing plate 2 to switch to 45° division, so that the dividing plate 2 can switch to 45° while having 60° division, so that the scope of use is wider and the processing is faster. Example 6

[0092] This embodiment provides a hydraulic indexing chuck, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0093] Furthermore, it also includes:

[0094] A clamping groove 11, which is provided on the chuck body 1, and is connected to the end surface of the chuck body 1, and the clamping groove 11 divides the chuck body 1 into two parts, an upper part and a lower part;

[0095] A clamping piston 12, wherein the clamping piston 12 is fixedly arranged inside the upper part of the chuck body 1;

[0096] The upper clamping claw 13, the piston rod end of the clamping piston 12 is fixedly and rotatably connected to one end of the upper clamping claw 13.

[0097] A lower clamping jaw 14, the indexing plate 2 is fixedly rotatably arranged inside the lower part of the chuck body 1, and the lower clamping jaw 14 is fixedly connected to the upper end of the indexing plate 2;

[0098] The clamping jaws 13 and 14 are both located in the clamping groove 11 and are arranged opposite to each other. The positions of the upper clamping jaw 13 and the lower clamping jaw 14 are arranged correspondingly.

[0099] In the present technical solution, a clamping groove 11, a clamping piston 12, an upper clamping jaw 13 and a lower clamping jaw 14 are provided. When a workpiece needs to be installed, the workpiece is placed on the lower clamping jaw 14, and then the clamping piston 12 is started by controlling the oil circuit (not shown in the figure). The clamping piston 12 is hydraulically controlled (this control method is a prior art and will not be described in detail here). The clamping piston 12 drives the upper clamping jaw 13 to move downward, so that the workpiece can be clamped for convenient processing. The upper clamping jaw 13 is fixedly rotatably connected to the piston rod end of the clamping piston 12, and the lower clamping jaw 14 is fixedly arranged on the dividing plate 2, so that the rotation of the dividing plate 2 will drive the lower clamping jaw 14 to rotate, thereby driving the workpiece for indexing processing. Example 7

[0100] This embodiment provides a hydraulic indexing chuck, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0101] Furthermore, the upper clamping jaw 13 and the clamping piston 12 as well as the lower clamping jaw 14 and the indexing plate 2 are detachably connected via step screws 15 .

[0102] In the present technical solution, the detachable connection is achieved through the stepped screws 15, so that the models and specifications of the upper clamping jaw 13 and the lower clamping jaw 14 can be easily replaced, and maintenance, replacement or adaptation to different types of workpieces can be facilitated. Example 8

[0103] This embodiment provides a hydraulic indexing chuck, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0104] Furthermore, it also includes:

[0105] Countersunk holes 16 are formed at opposite ends of the upper clamping jaw 13 and the lower clamping jaw 14 , and the screw heads of the step screws 15 are located in the countersunk holes 16 .

[0106] In the present technical solution, the countersunk hole 16 is provided to prevent the screw head of the step screw 15 from being exposed, thereby preventing the screw head of the step screw 15 from interfering with the workpiece.

[0107] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the specification of the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A hydraulic indexing chuck, comprising a chuck body (1), characterized in that: Also includes: A dividing plate (2), the dividing plate (2) being rotatably arranged in the chuck body (1), the upper and lower sections of the dividing plate (2) being a cube (18) and a hexagram (17) respectively; A rotating push rod (3), wherein the rotating push rod (3) is fixedly arranged in the chuck body (1) and is used to drive the hexagram body (17) to rotate; A fixed push rod (4), the fixed push rod (4) being fixedly arranged in the chuck body (1) and used for positioning the hexagram body (17) for a 60° rotation; An indexing assembly, used to drive the cube (18) to rotate or to locate the position of the cube (18); Wherein, the cross section of the hexagram body (17) is in the shape of a hexagram.

2. A hydraulic indexing chuck according to claim 1, characterized in that: Also includes: Tip angles (5), the outer periphery of the hexagram (17) having six equally spaced tip angles (5), the midline angle between two adjacent tip angles (5) being 60°; A recessed corner (6), wherein a recessed corner (6) is formed between adjacent tip corners (5); Wherein, after the piston rod of the rotating push rod (3) pushes the tip angle (5) of the hexagram (17) corresponding to the current position of the rotating push rod (3) to drive the hexagram (17) to rotate, the inclined surface between one of the recessed angles (6) of the hexagram (17) and the tip angle (5) will correspond to the piston rod end of the fixed push rod (4), and after the piston rod of the fixed push rod (4) is pressed against the recessed angle (6) of the hexagram (17) along the inclined surface, the next tip angle (5) of the hexagram (17) is arranged corresponding to the rotating push rod (3).

3. A hydraulic indexing chuck according to claim 2, characterized in that: Also includes: Cone angle (7), the piston rod end of the fixed push rod (4) has a cone angle (7), and the angle of the cone angle (7) matches the concave angle (6) of the hexagram (17).

4. A hydraulic indexing chuck according to claim 3, characterized in that: Also includes: Circular grooves (8), the number of the circular grooves (8) matches the recessed angle (6), the circular grooves (8) are opened at the vertices of the recessed angle (6), and the circular grooves (8) and the recessed angle (6) are interlinked.

5. A hydraulic indexing chuck according to claim 4, characterized in that: The indexing assembly comprises: A first push rod (9), the first push rod (9) being fixedly arranged in the chuck body (1) and used for positioning the cube (18) for 45° rotation; A second push rod (10), the second push rod (10) being fixedly arranged in the chuck body (1) and used for positioning the cube (18) for 90° rotation; The piston rod ends of the first push rod (9) and the second push rod (10) are both provided with inclined surfaces. When the inclined surface of the piston rod end of the first push rod (9) is pressed against the surface of the cube (18), the cube (18) will rotate 45°. When the inclined surface of the piston rod end of the second push rod (10) is pressed against the surface of the cube (18), the cube (18) will rotate another 45° on the basis of the above.

6. A hydraulic indexing chuck according to claim 4 or 5, characterized in that: Also includes: A clamping groove (11), the clamping groove (11) being provided on the chuck body (1), the clamping groove (11) being interpenetrating with the end surface of the chuck body (1), the clamping groove (11) dividing the chuck body (1) into two parts, an upper part and a lower part; A clamping piston (12), wherein the clamping piston (12) is fixedly arranged inside the upper part of the chuck body (1); An upper clamping jaw (13), the piston rod end of the clamping piston (12) being fixedly rotatably connected to one end of the upper clamping jaw (13); a lower clamping jaw (14), the indexing plate (2) being fixedly rotatably arranged inside the lower part of the chuck body (1), the lower clamping jaw (14) being fixedly connected to the upper end of the indexing plate (2); The clamping jaws (13) and the clamping jaws (14) are both located in the clamping groove (11) and are arranged opposite to each other, and the positions of the upper clamping jaw (13) and the lower clamping jaw (14) are arranged correspondingly.

7. A hydraulic indexing chuck according to claim 6, characterized in that: The upper clamping claw (13) and the clamping piston (12), as well as the lower clamping claw (14) and the indexing plate (2), are detachably connected via stepped screws (15).

8. A hydraulic indexing chuck according to claim 7, characterized in that: Also includes: A countersunk hole (16) is provided at the opposite ends of the upper clamping claw (13) and the lower clamping claw (14), and the screw head of the stepped screw (15) is located in the countersunk hole (16).

Images