Thin film internal expansion clamp for static disc

Abstract

The utility model discloses a thin film internal expansion clamp for a static disc, which belongs to the technical field of clamps and comprises a bottom plate, a screw, an expansion sleeve body, a pull-down ring component, an adapter ring, a spacer bush, a support block, a mistake-proof block, a pull-up oil cylinder seat, a piston, a rhombic positioning pin, an oil cylinder sealing cover, an expansion sleeve and a sealing plug. By means of the mode, the feeding assembly places a workpiece above the mistake-proofing block, the air supply equipment supplies air into the first notch so as to drive the piston to move, the piston moves to drive the sealing plug to move, the sealing plug moves to drive the supporting base to move, the supporting base moves to drive the positioning column to move, and the positioning column drives the adapter ring to move; by means of the structure of the expansion sleeve, the clamping device can be suitable for workpieces of different sizes and has a good clamping function, the positions of the workpieces can be positioned through the mistake-proof blocks, and it is guaranteed that the clamping positions are correct.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fixture, concretely relates to a film inner expansion fixture for static disc. BACKGROUND

[0002] The film inner expansion fixture is a kind of power source using compressed air, when compressed air enters the air cavity inside the fixture, push the expansion sleeve to expand, thereby clamping workpiece, when needing to clamp workpiece (such as static disc etc.), by the pressure applied to the specific chamber inside the fixture, make the expansion sleeve produce the deformation of outward expansion;Workpiece is firmly fixed in the central position of fixture by the friction between expansion sleeve and workpiece and the uniform pressure distribution, to realize the accurate clamping and positioning of workpiece.

[0003] For example, Chinese patent CN219025972U discloses an inner expansion fixture, including flange and the transition block for fixing in machine tool, transition block fixedly arranged on the side surface of flange, the side surface of flange is equipped with inner expansion chuck, one end of inner expansion chuck is inserted into the inside of flange, and the connection between flange and inner expansion chuck is convenient to disassemble, the other end of inner expansion chuck is divided into the even several blocks of connection block, and the gap is left between several blocks of connection block, the inside of inner expansion chuck is provided with the top cone for opening inner expansion chuck, the side of transition block is equipped with telescopic connecting piece, one end of top cone sequentially passes through flange and transition block from inner expansion chuck and finally penetrates into telescopic connecting piece, and the connection between telescopic connecting piece and top cone is convenient to disassemble.

[0004] However, its technology has the following problems, only suitable for one size of workpiece, and the size of workpiece is limited in use range;

[0005] The top cone is used for opening inner expansion chuck, and the operation precision of the top cone is crucial to the performance of the fixture. The top cone sequentially passes through flange and transition block from inner expansion chuck and finally penetrates into telescopic connecting piece, and this long-stroke structure design can cause the straightness of the top cone in the movement process to be difficult to guarantee, if the movement of the top cone is not accurate, the opening of the inner expansion chuck will be uneven, and then the clamping effect on the workpiece is affected.

[0006] Based on this, the utility model discloses a film inner expansion fixture for static disc to solve the above problems. UTILITY MODEL CONTENTS

[0007] In view of the above shortcomings of prior art, the utility model provides a film inner expansion fixture for static disc.

[0008] To achieve the above object, the utility model is realized by the following technical scheme:

[0009] The utility model provides a kind of film inner expansion clamp for static disc, including bottom plate, screw, expansion sleeve body, lower pull ring assembly, adapter ring, spacer, support block, mistake prevention block, upper pull cylinder seat, piston, oil cylinder cover, expansion sleeve and sealing plug;

[0010] The middle part of the bottom plate is provided with a first notch, and the bottom of the first notch is fixedly installed with an oil cylinder cover.

[0011] The upper end of the upper pull cylinder seat is installed with a lower pull ring assembly, which is connected with the expansion sleeve body.

[0012] Further, the lower end of the bottom plate is provided with a connecting hole, which is communicated with the first notch.

[0013] Further, the lower pull ring assembly includes a support seat and a positioning column, the positioning column is fixedly installed on the upper end of the support seat, the outer end side wall of the support seat is slidably connected with the inner wall of the expansion sleeve body, the upper end of the positioning column is clamped with the inner wall of the adapter ring, the upper end of the sealing plug is embedded in the middle part of the support seat, and the upper end of the positioning column is in contact with the lower end of the expansion sleeve.

[0014] Further, the positioning column is equally spaced and arranged on a circle.

[0015] Further, the middle part of the expansion sleeve body is equally spaced and provided with a plurality of through holes, and the positioning column is clamped with the inner lower end of the adapter ring through the through holes.

[0016] Further, the middle part of the adapter ring is divided into two parts by a dividing line, and the two parts are tightly fitted.

[0017] Further, the expansion sleeve is equally spaced and arranged on a circle.

[0018] Further, the upper outer end of the expansion sleeve body is provided with a tapered surface, which is slidably connected with the inner wall of the expansion sleeve.

[0019] Further, the inner end side wall of the support block is provided with a containing groove, and a rhombic positioning pin is arranged in the containing groove.

[0020] Compared with the prior art, the utility model has the advantages that: in use, the feeding assembly places the workpiece above the mistake-proofing block, the air supply equipment ventilates into the first slot to drive the movement of the piston, the movement of the piston drives the movement of the sealing plug, the movement of the sealing plug drives the movement of the support seat, the movement of the support seat drives the movement of the positioning column, the positioning column drives the movement of the adapter ring, the adapter ring drives the expansion sleeve to slide on the upper end taper surface of the expansion sleeve body, thereby realizing the clamping of the workpiece from the inside, and the utility model has the advantages of simple structure, convenient use, uniform expansion of the expansion sleeve, and improved clamping effect on the workpiece.

[0021] The structure of the expansion sleeve can be applied to workpieces of different sizes, and has good clamping function, and the mistake-proofing block can position the workpiece position to ensure the correct clamping position. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0023] Figure 1 It is a perspective view of a film inner expansion clamp for a static disc of the utility model;

[0024] Figure 2 It is a sectional view of a film inner expansion clamp for a static disc of the utility model;

[0025] Figure 3 It is an explosion of a film inner expansion clamp for a static disc of the utility model Figure 1 ;

[0026] Figure 4 It is an explosion of a film inner expansion clamp for a static disc of the utility model Figure 2 ;

[0027] Figure 5 It is a perspective view of a support block of the utility model;

[0028] Figure 6 It is a schematic view of an adapter ring of the utility model;

[0029] Figure 7The utility model discloses a three -dimensional view of the lower pull ring subassembly.

[0030] The reference numerals in the drawing respectively represent:

[0031] 1, bottom plate, 2, screw, 3, expansion sleeve body, 4, lower pull ring subassembly, 41, support seat, 42, positioning column, 5, adapter ring, 6, spacer sleeve, 7, support block, 8, mistake-proofing block, 9, upper pull oil cylinder seat, 10, piston, 11, rhombic positioning pin, 12, oil cylinder cover, 13, expansion sleeve, 14, sealing plug, 15, connecting hole. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the following will combine the drawing in the utility model embodiment, and the technical scheme in the utility model embodiment is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0033] In the following description, "left", "right", "front", "back", "up", "down" are oriented with the perspective direction of the drawing. Figure 2

[0034] Embodiment one: in some embodiments, please refer to the drawing of the specification Figures 1-7 A film inner expansion clamp for static disc, including bottom plate 1, screw 2, expansion sleeve body 3, lower pull ring subassembly 4, adapter ring 5, spacer sleeve 6, support block 7, mistake-proofing block 8, upper pull oil cylinder seat 9, piston 10, oil cylinder cover 12, expansion sleeve 13 and sealing plug 14.

[0035] The middle part of the bottom plate 1 is provided with a first notch, the oil cylinder cover 12 is fixedly installed in the first notch, the upper end of the oil cylinder cover 12 is closely combined with the upper pull oil cylinder seat 9, the upper pull oil cylinder seat 9 is detachably connected with the oil cylinder cover 12 through the screw 2, the through slot is provided in the inside of the upper pull oil cylinder seat 9, and the piston 10 and the spacer sleeve 6 are installed in the through slot, the side wall of the piston 10 is slidably connected with the inner end of the spacer sleeve 6, and the outer end of the spacer sleeve 6 is fixedly connected with the inside of the through slot.

[0036] Preferably, the lower end of the bottom plate 1 is provided with the connecting hole 15, the connecting hole 15 is communicated with the first notch, and the air hole is connected with the gas supply equipment.

[0037] The upper end of the upper pull oil cylinder seat 9 is provided with the lower pull ring subassembly 4,

[0038] ​Preferably, the pull-down ring assembly 4 comprises a support seat 41 and a positioning column 42 fixedly installed on the upper end of the support seat 41, the outer end side wall of the support seat 41 is in sliding connection with the inner wall of the expansion sleeve body 3, the upper end of the positioning column 42 is in clamping connection with the inner wall of the adapter ring 5, the upper end of the sealing plug 14 is embedded in the middle part of the support seat 41, and the upper end of the positioning column 42 is in contact connection with the lower end of the expansion sleeve 13.

[0039] The positioning column 42 is provided with a plurality of equal intervals and arranged on a circle.

[0040] The pull-down ring assembly 4 is connected with the expansion sleeve body 3, the lower end of the expansion sleeve body 3 is fixedly connected with the bottom plate 1,

[0041] Preferably, a plurality of through holes are provided in the middle part of the expansion sleeve body 3 at equal intervals, and the positioning column 42 passes through the through holes and is clamped with the inner lower end of the adapter ring 5.

[0042] The upper end of the expansion sleeve body 3 is fixedly connected with the support block 7, the inner part of the support block 7 is provided with a second notch, the upper outer end of the expansion sleeve body 3 is sequentially provided with the adapter ring 5 and the expansion sleeve 13, the upper end of the pull-down ring assembly 4 is in contact connection with the lower end of the expansion sleeve 13, the lower end of the second notch is in sliding connection with the outer wall of the adapter ring 5, the upper end of the second notch is in sliding connection with the expansion sleeve 13, the inner wall of the adapter ring 5 is clamped with the lower end of the expansion sleeve 13, the inner wall of the adapter ring 5 is connected with the upper end of the pull-down ring assembly 4, the top of the expansion sleeve body 3 is fixedly connected with the anti-error block 8, the lower end of the sealing plug 14 is embedded in the middle part of the piston 10, and the upper end of the sealing plug 14 is embedded in the middle part of the pull-down ring assembly 4.

[0043] Effect: The shape of the anti-error block 8 is matched with the shape of the inside of the workpiece, which is used for positioning the position of the workpiece.

[0044] Preferably, the middle part of the adapter ring 5 is divided into front and rear parts by a dividing line, and the front and rear parts are tightly matched.

[0045] Effect: When the equipment is maintained or the parts are replaced, the front and rear split adapter ring 5 is convenient to disassemble, if the adapter ring 5 is integral, when the parts surrounded by the adapter ring 5 need to be replaced or the adapter ring 5 itself needs to be repaired, a large number of other parts connected with the adapter ring 5 need to be disassembled to remove the adapter ring 5, while the front and rear split adapter ring 5 only needs to be disassembled respectively, and then the adapter ring 5 can be easily removed from the main body of the equipment, which reduces the difficulty and time of maintenance work.

[0046] Preferably, the expansion sleeve 13 is provided with a plurality of equal intervals and arranged on a circle.

[0047] Preferably, the upper outer end of the expansion sleeve body 3 is provided with a tapered surface, which is in sliding connection with the inner wall of the expansion sleeve 13, and the matching degree is more than 90%.

[0048] Preferably, the inner end side wall of the support block 7 is provided with a containing groove, and a rhombic positioning pin 11 is arranged in the containing groove; the support block 7 is detachably connected with the expansion sleeve body 3 through the rhombic positioning pin 11.

[0049] Effect, the rhombic positioning pin 11 is used for positioning the position of the workpiece.

[0050] In use, the feeding assembly places the workpiece above the mistake-proof block 8, the air supply equipment ventilates into the first notch to drive the movement of the piston 10, the movement of the piston 10 drives the movement of the sealing plug 14, the movement of the sealing plug 14 drives the movement of the support seat 41, the movement of the support seat 41 drives the movement of the positioning column 42, the positioning column 42 drives the movement of the adapter ring 5, and the adapter ring 5 drives the expansion sleeve 13 to slide on the upper end taper surface of the expansion sleeve body 3, so as to realize the clamping of the workpiece from the inside, and the structure is simple, convenient to use, and quick in action, can quickly realize clamping and loosening, improves the working efficiency, ensures the uniformity of the expansion of the expansion sleeve 13, and further improves the clamping effect of the workpiece.

[0051] The structure of the expansion sleeve 13 can be applied to workpieces of different sizes, and has good clamping function; the mistake-proof block 8 can position the position of the workpiece, and ensure that the clamping position is correct.

[0052] The above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and range of the technical solutions of the embodiments of the utility model.

Claims

1. A film inner-expanding clamp for a static disc comprising a base plate (1), characterized in that: Also includes screw (2), expansion sleeve body (3), lower pull ring assembly (4), adapter ring (5), spacer (6), support block (8), anti-mist block (8), upper pull cylinder seat (9), piston (10), cylinder cover (12), expansion sleeve (13) and sealing plug (14); The middle part of the bottom plate (1) is provided with a first notch, and the bottom of the first notch is fixedly provided with a cylinder cover (12). The upper end of the cylinder cover (12) is closely attached to the upper pull cylinder seat (9). The upper pull cylinder seat (9) is detachably connected with the cylinder cover (12) through a screw (2). The inside of the upper pull cylinder seat (9) is provided with a through slot. The through slot is internally provided with a piston (10) and a spacer (6). The sidewall of the piston (10) is slidably connected with the inner end of the spacer (6). The outer end of the spacer (6) is fixedly connected with the inside of the through slot. The upper end of the upper pull cylinder seat (9) is provided with a lower pull ring assembly (4). The lower pull ring assembly (4) is connected with the expansion sleeve body (3). The lower end of the expansion sleeve body (3) is fixedly connected with the bottom plate (1). The upper end of the expansion sleeve body (3) is fixedly connected with the support block (7) on the outside. The inside of the support block (7) is provided with a second notch. The upper side of the expansion sleeve body (3) is sequentially provided with an adapter ring (5) and an expansion sleeve (13) on the outside. The upper end of the lower pull ring assembly (4) is in contact with the lower end of the expansion sleeve (13). The lower end of the second notch is slidably connected with the outer wall of the adapter ring (5). The upper end of the second notch is slidably connected with the expansion sleeve (13). The inner wall of the adapter ring (5) is clamped with the lower end of the expansion sleeve (13). The inner wall of the adapter ring (5) is connected with the upper end of the lower pull ring assembly (4). The top of the expansion sleeve body (3) is fixedly connected with the anti-mist block (8). The lower end of the sealing plug (14) is embedded in the middle part of the piston (10). The upper end of the sealing plug (14) is embedded in the middle part of the lower pull ring assembly (4).

2. The film inner-expanding clamp for a static disc according to claim 1, characterized by The lower end of the bottom plate (1) is provided with a connecting hole (15). The connecting hole (15) is in communication with the first notch. The air hole is externally connected with a gas supply device.

3. The film inner expander clamp for static disc according to claim 1, wherein The lower pull ring assembly (4) comprises a support seat (41) and a positioning column (42). The positioning column (42) is fixedly installed on the upper end of the support seat (41). The outer end sidewall of the support seat (41) is slidably connected with the inner wall of the expansion sleeve body (3). The upper end of the positioning column (42) is clamped with the inner wall of the adapter ring (5). The upper end of the sealing plug (14) is embedded in the middle part of the support seat (41). The upper end of the positioning column (42) is in contact with the lower end of the expansion sleeve (13).

4. The film inner-expanding clamp for a static disc according to claim 3, characterized by The positioning column (42) is equally spaced and arranged on a circle.

5. The film inner-expanding clamp for a static disc according to claim 4, characterized by The middle part of the expansion sleeve body (3) is equally spaced and provided with a plurality of through holes. The positioning column (42) passes through the through holes and is clamped with the inner lower end of the adapter ring (5).

6. The film inner-expanding clamp for a static disc according to claim 5, wherein The middle part of the adapter ring (5) is divided into two parts by a dividing line. The two parts are closely attached.

7. The film inner expander clamp for static disc according to claim 3, wherein The expansion sleeve (13) is equally spaced and arranged on a circle.

8. The film inner-expanding clamp for a static disc according to claim 7, characterized by The upper side of the expansion sleeve body (3) is provided with a tapered surface on the outside. The tapered surface is slidably connected with the inner wall of the expansion sleeve (13).

9. The film inner expander clamp for static disc according to claim 1, wherein The inner end side wall of the support block (7) is provided with a containing groove, and the inside of the containing groove is provided with a rhombic positioning pin (11). The support block (7) is detachably connected with the expansion sleeve body (3) through the rhombic positioning pin (11).

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