End face seal glue prevents the inner expansion type centering oil pressure clamp

Abstract

The utility model relates to a kind of end face glue sealing anti-dust inner expansion type centering oil pressure clamp, comprising: end face glue sealing, rubber expansion sleeve and clamping seat body, the center shaft is formed in clamping seat body top, the outer conical surface is formed in the outside of center shaft, the conical through hole is formed in rubber expansion sleeve middle part, the center shaft is coaxial with conical through hole and is inserted into conical through hole, the outer conical surface of center shaft and the inner conical surface of conical through hole are attached, end face glue sealing is located in the upper of conical through hole and covers the upper end opening of conical through hole, end face glue sealing is fixedly connected with rubber expansion sleeve upper end surface, end face glue sealing has elasticity.The utility model seals the conical through hole of rubber expansion sleeve by using end face glue sealing, prevents that swarf and cutting fluid enter rubber expansion sleeve inside, and operator does not need to seal conical through hole regularly cleaning, reduce the labor intensity of operator;End face glue sealing is made of elastic material, and can be elastically deformed to adapt to the expansion and shrinkage of rubber expansion sleeve, always keep to conical through hole completely cover, and no gap will be produced.

Description

Technical Field

[0001] This utility model relates to the field of clamps, and in particular to a centering hydraulic clamp with end-face sealing to prevent chipping and internal expansion. Background Technology

[0002] Rubber chucks consist of rubber expansion sleeves, which clamp and release workpieces by expanding and contracting. When using centering chuck-type rubber chucks on vertical machining centers, cutting fluid and machined chips fall into the rubber expansion sleeves and cannot be discharged. This forces operators to frequently clean the chips inside the rubber expansion sleeves, which increases the workload of the operators. Utility Model Content

[0003] This invention aims to solve the above problems by providing an end-face sealing anti-chip internal expansion centering hydraulic clamp, which solves the problem of cutting fluid and chips falling into the rubber expansion sleeve.

[0004] A chip-resistant, internally expanding, centering hydraulic clamp with end-face sealing includes: end-face sealing, a rubber expansion sleeve, and a clamping body. A central shaft is formed on the upper part of the clamping body, and an outer conical surface is formed on the outer side of the central shaft. A conical through hole is formed in the middle of the rubber expansion sleeve. The central shaft is coaxial with the conical through hole and inserted into the conical through hole. The outer conical surface of the central shaft fits against the inner conical surface of the conical through hole. The end-face sealing is located above the conical through hole and covers the upper opening of the conical through hole. The end-face sealing is fixedly connected to the upper end face of the rubber expansion sleeve. The end-face sealing is elastic.

[0005] Preferably, the end-face sealing includes a top plate and a tube body, the lower end of the tube body is attached to and fixedly connected to the upper end face of the rubber expansion sleeve, and the upper end of the tube body is integrally formed with the top plate.

[0006] Preferably, the end-face sealant is made of rubber or silicone; the end-face sealant seals the upper opening of the tapered through hole.

[0007] Preferably, the end face sealant includes a rubber block and a metal block, the rubber block and the metal block are arranged in an alternating circumferential pattern, and the two circumferential sides of the metal block are fixedly connected to the adjacent rubber block respectively.

[0008] Preferably, the end-face sealant is rubber, and the end-face sealant is integrally formed or bonded to the rubber block, and the end-face sealant is bonded to the metal block.

[0009] Preferably, it further includes a support plate, a coupling ring, and a piston-type pull shaft. The support plate is fitted on the outside of the central shaft and fixedly connected to the clamp body. The rubber expansion sleeve extends upward through the through hole at the upper end of the support plate and has a gap with the through hole of the support plate. The piston-type pull shaft is connected to the rubber expansion sleeve through the coupling ring. The piston-type pull shaft drives the rubber expansion sleeve to move up and down relative to the central shaft.

[0010] Preferably, the lower end of the rubber expansion sleeve has a first annular groove, the upper end of the piston-type pull shaft has a first groove, the coupling ring is inserted into the support disk and slidably connected to the support disk, the upper and lower ends of the inner wall of the coupling ring have inner protrusions respectively, and the inner protrusions at the upper and lower ends of the coupling ring are respectively inserted into the first annular groove and the first groove.

[0011] Preferably, it also includes a cover. The piston-type pull shaft includes a connecting part and a piston. The lower end of the connecting part is integrally formed with the piston. The connecting part and the piston are slidably connected to the inner wall of the clamp body. The cover is located below the piston and is fixedly connected to the clamp body. Hydraulic chambers are formed between the piston above and the clamp body, and between the piston below and the cover. The clamp body has a first interface and a second interface. The first interface is connected to the hydraulic chamber above the piston, and the second interface is connected to the hydraulic chamber below the piston.

[0012] Preferably, the piston-type pull shaft body further includes a pull shaft, the upper end of the connecting part is integrally formed with multiple pull shafts, the pull shaft passes upward through the clamp body and is slidably connected to the clamp body, and the pull shaft has a first groove.

[0013] Preferably, it also includes bolts, and the clamp body has a plurality of vertical mounting through holes through which the bolts pass.

[0014] This invention has the following advantages: by using end-face sealing adhesive to seal the conical through hole of the rubber expansion sleeve, chips and cutting fluid are prevented from entering the interior of the rubber expansion sleeve. Operators do not need to clean the conical through hole seal regularly, reducing the labor intensity of operators. The end-face sealing adhesive is made of elastic material, which can elastically deform to adapt to the expansion and contraction of the rubber expansion sleeve, and always maintains complete coverage of the conical through hole without creating gaps. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0016] Figure 1 : A three-dimensional structural schematic diagram of this utility model (first perspective); Figure 2 : A three-dimensional structural schematic diagram of this utility model (second perspective); Figure 3 : A top view of the structure of this utility model; Figure 4 :exist Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 :exist Figure 3 A schematic diagram of the rotated sectional view at point BB; Figure 6 :exist Figure 5 A magnified schematic diagram of the structure at point C. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and examples: The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. like Figures 1 to 6 As shown, a chip-resistant, internally expanding, centering hydraulic clamp with end-face sealing includes: end-face sealant 1, rubber expansion sleeve 2, and clamp body 6. A central shaft 61 is formed on the upper part of the clamp body 6, and an outer conical surface is formed on the outer side of the central shaft 61. A conical through hole 20 is formed in the middle of the rubber expansion sleeve 2. The central shaft 61 is coaxial with the conical through hole 20 and inserted into the conical through hole 20. The outer conical surface of the central shaft 61 fits against the inner conical surface of the conical through hole 20. The end-face sealant 1 is located above the conical through hole 20 and covers the upper opening of the conical through hole 20. The end-face sealant 1 is fixedly connected to the upper end face of the rubber expansion sleeve 2, and the end-face sealant 1 is elastic.

[0020] During operation, the workpiece is fitted onto the outside of the rubber expansion sleeve 2, which is then pulled downwards. During this downward movement, the tapered through-hole 20, under the pressure of the outer tapered surface of the central shaft 61, causes the rubber expansion sleeve 2 to expand outwards, clamping the inner hole of the workpiece and thus fixing the rubber expansion sleeve 2 to the workpiece. After the workpiece is processed, the rubber expansion sleeve 2 is pushed upwards and then contracts inwards to reset, releasing the workpiece, allowing it to be removed. During the expansion and contraction of the rubber expansion sleeve 2, the end-face sealant 1 undergoes elastic deformation, adapting to the change in shape of the rubber expansion sleeve 2 and ensuring that it always completely covers the upper opening of the tapered through-hole 20.

[0021] During the workpiece machining process, the workpiece is processed by the cutting tool to generate chips. The end face sealant 1 seals the upper opening of the tapered through hole 20, preventing cutting fluid and chips from entering the tapered through hole 20. Therefore, it is not necessary to clean the tapered through hole 20, reducing the labor intensity of the operator.

[0022] Preferably, the end-face sealant 1 includes a top plate 11 and a tube 12. The lower end of the tube 12 is attached to and fixedly connected to the upper end face of the rubber expansion sleeve 2, and the upper end of the tube 12 is integrally formed with the top plate 11. The top plate 11 and the tube 12 form an axial space, providing additional movement space for the rubber expansion sleeve 2. At the same time, by controlling the thickness of the tube 12, the connection area between it and the integrally vulcanized rubber block 21 can be controlled, ensuring sufficient connection strength.

[0023] Preferably, the end-face sealant 1 is made of rubber or silicone. It should be noted that the end-face sealant 1 can also be made of other waterproof elastic materials.

[0024] Preferably, the end-face sealant 1 seals the upper opening of the tapered through hole 20, thereby preventing liquid from entering the upper opening of the tapered through hole 20.

[0025] Preferably, the end face sealant 1 includes a rubber block 21 and a metal block 22, the rubber block 21 and the metal block 22 are arranged in an alternating circumferential pattern, and the metal block 22 is fixedly connected to the adjacent rubber block 21 on both sides of the circumference.

[0026] Preferably, the end face sealant 1 is rubber, the end face sealant 1 is integrally formed or bonded to the rubber block 21, and the end face sealant 1 is bonded to the metal block 22.

[0027] Preferably, it also includes a support plate 3, a coupling ring 5, and a piston-type pull shaft 7. The support plate 3 is fitted on the outside of the central shaft 61 and is fixedly connected to the clamp body 6. The rubber expansion sleeve 2 extends upward through the through hole at the upper end of the support plate 3 and there is a gap between it and the through hole of the support plate 3. The piston-type pull shaft 7 is connected to the rubber expansion sleeve 2 through the coupling ring 5. The piston-type pull shaft 7 drives the rubber expansion sleeve 2 to move up and down relative to the central shaft 61.

[0028] Preferably, the lower end of the rubber expansion sleeve 2 is formed with a first annular groove 23, the upper end of the piston-type pull shaft body 7 is formed with a first groove 711, the coupling ring 5 is inserted into the support disk 3 and slidably connected to the support disk 3, the upper and lower ends of the inner wall of the coupling ring 5 are respectively formed with inner protrusions, and the inner protrusions at the upper and lower ends of the coupling ring 5 are respectively inserted into the first annular groove 23 and the first groove 711.

[0029] Preferably, it also includes a cover 8. The piston-type pull shaft body 7 includes a connecting part 72 and a piston 73. The lower end of the connecting part 72 is integrally formed with the piston 73. The connecting part 72 and the piston 73 are slidably connected to the inner wall of the clamp body 6. The cover 8 is located below the piston 73 and is fixedly connected to the clamp body 6. Hydraulic chambers are formed between the piston 73 and the clamp body 6 above it, and between the piston 73 and the cover 8 below it. The clamp body 6 has a first interface 62 and a second interface 63. The first interface 62 is connected to the hydraulic chamber above the piston 73, and the second interface 63 is connected to the hydraulic chamber below the piston 73.

[0030] When the rubber expansion sleeve 2 expands, hydraulic oil is filled into the hydraulic chamber above the piston 73, and hydraulic oil is discharged from the hydraulic chamber below the piston 73. The piston-type pull shaft 7 moves downward, driving the coupling ring 5 to pull the rubber expansion sleeve 2 downward. When the rubber expansion sleeve 2 contracts, hydraulic oil is filled into the hydraulic chamber below the piston 73, and hydraulic oil is discharged from the hydraulic chamber above the piston 73. The piston-type pull shaft 7 moves upward, driving the coupling ring 5 to push the rubber expansion sleeve 2 upward. Without the compression of the outer conical surface, the rubber expansion sleeve 2 contracts and returns to its original position.

[0031] Preferably, the piston-type pull shaft body 7 further includes a pull shaft 71, the upper end of the connecting part 72 is integrally formed with a plurality of pull shafts 71, the pull shaft 71 passes upward through the clamp body 6 and is slidably connected to the clamp body 6, and the pull shaft 71 forms a first groove 711.

[0032] Preferably, the device further includes bolts 4, and the clamp body 6 has multiple vertical mounting through holes 64, through which bolts 4 pass. During installation, bolts 4 are threadedly connected to designated components of the machine tool to fix the clamp body 6 to the designated components.

[0033] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A type of end-face sealing, chip-proof, internally expanding centering hydraulic clamp, characterized in that, include: The device comprises an end face sealant (1), a rubber expansion sleeve (2), and a clamp body (6). A central shaft (61) is formed on the upper part of the clamp body (6). An outer conical surface is formed on the outer side of the central shaft (61). A conical through hole (20) is formed in the middle of the rubber expansion sleeve (2). The central shaft (61) is coaxial with the conical through hole (20) and inserted into the conical through hole (20). The outer conical surface of the central shaft (61) is in contact with the inner conical surface of the conical through hole (20). The end face sealant (1) is located above the conical through hole (20) and covers the upper opening of the conical through hole (20). The end face sealant (1) is fixedly connected to the upper end face of the rubber expansion sleeve (2). The end face sealant (1) is elastic.

2. The end-face sealing anti-chip internal expansion type centering hydraulic clamp according to claim 1, characterized in that: The end face sealant (1) includes a top plate (11) and a tube (12). The lower end of the tube (12) is attached to and fixedly connected to the upper end face of the rubber expansion sleeve (2). The upper end of the tube (12) is integrally formed with the top plate (11).

3. The end-face sealing anti-chip internal expansion type centering hydraulic clamp according to claim 1, characterized in that: The end-face sealant (1) is made of rubber or silicone; the end-face sealant (1) seals the upper opening of the tapered through hole (20).

4. The end-face sealing anti-chip internal expansion type centering hydraulic clamp according to claim 1, characterized in that: The end face sealant (1) includes a rubber block (21) and a metal block (22). The rubber block (21) and the metal block (22) are arranged in an alternating circumferential pattern. The metal block (22) is fixedly connected to the adjacent rubber block (21) on both sides of the circumference.

5. The end-face sealing anti-chip internal expansion type centering hydraulic clamp according to claim 4, characterized in that: The end face sealant (1) is made of rubber. The end face sealant (1) is integrally formed or bonded to the rubber block (21). The end face sealant (1) is bonded to the metal block (22).

6. The end-face sealing anti-chip expansion type centering hydraulic clamp according to claim 1, characterized in that: It also includes a support plate (3), a coupling ring (5) and a piston-type pull shaft (7). The support plate (3) is fitted on the outside of the central shaft (61) and fixedly connected to the clamp body (6). The rubber expansion sleeve (2) extends upward through the through hole at the upper end of the support plate (3) and there is a gap between it and the through hole of the support plate (3). The piston-type pull shaft (7) is connected to the rubber expansion sleeve (2) through the coupling ring (5). The piston-type pull shaft (7) drives the rubber expansion sleeve (2) to move up and down relative to the central shaft (61).

7. The end-face sealing anti-chip internal expansion type centering hydraulic clamp according to claim 6, characterized in that: The lower end of the rubber expansion sleeve (2) has a first annular groove (23), the upper end of the piston-type pull shaft body (7) has a first groove (711), the coupling ring (5) is inserted into the support plate (3) and slidably connected to the support plate (3), the upper and lower ends of the inner wall of the coupling ring (5) have inner protrusions respectively, and the inner protrusions at the upper and lower ends of the coupling ring (5) are respectively inserted into the first annular groove (23) and the first groove (711).

8. The end-face sealing anti-chip expansion type centering hydraulic clamp according to claim 7, characterized in that: It also includes a cover (8). The piston-type pull shaft body (7) includes a connecting part (72) and a piston (73). The lower end of the connecting part (72) is integrally formed with the piston (73). The connecting part (72) and the piston (73) are slidably connected to the inner wall of the clamp body (6). The cover (8) is located below the piston (73) and is fixedly connected to the clamp body (6). Hydraulic chambers are formed between the piston (73) above and the clamp body (6), and between the piston (73) below and the cover (8). The clamp body (6) forms a first interface (62) and a second interface (63). The first interface (62) is connected to the hydraulic chamber above the piston (73), and the second interface (63) is connected to the hydraulic chamber below the piston (73).

9. The end-face sealing anti-chip expansion type centering hydraulic clamp according to claim 8, characterized in that: The piston-type pull shaft body (7) also includes a pull shaft (71). The upper end of the connecting part (72) is integrally formed with multiple pull shafts (71). The pull shaft (71) passes upward through the clamp body (6) and is slidably connected with the clamp body (6). The pull shaft (71) has a first groove (711).

10. The end-face sealing anti-chip internal expansion type centering hydraulic clamp according to claim 1, characterized in that: It also includes bolts (4), and the clamp body (6) has multiple vertical mounting through holes (64), through which the bolts (4) pass.

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