High-stability clamping mechanism for hydraulic cylinder barrel machining

Abstract

A plurality of guide grooves are evenly formed in the surface of a chuck body in the radial direction, a driving disc is arranged in the chuck body, a plurality of clamping jaws are arranged, correspond to the guide grooves in a one-to-one mode and are in sliding fit with the guide grooves, and inclined lines are formed in the inner side surfaces of the clamping jaws. The clamping jaws are matched with the driving disc through oblique lines, the ends, away from the oblique lines, of the clamping jaws are of stepped structures, extending clamping columns are perpendicularly arranged at the positions, located at the stepped structures, of the clamping jaws, a screw is arranged at the outer end of each extending clamping column in the guide groove direction, each screw is provided with a pressing nut, and a pressing plate is arranged at the end, close to the corresponding extending clamping column, of each pressing nut. The hydraulic cylinder end clamping device is reasonable in structure, the extending clamping columns abut against the inner wall of a hydraulic cylinder barrel through cooperation of the driving disc and the clamping jaws, then the outer wall of the hydraulic cylinder barrel is pressed through cooperation of the pressing nuts, clamping of the end of the cylinder barrel is achieved, stability is greatly improved, and therefore machining or detecting precision is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder clamping equipment technical field, concretely is a kind of clamping mechanism for hydraulic cylinder cylinder tube processing with Good stability. BACKGROUND

[0002] Hydraulic cylinder is the hydraulic energy into mechanical energy, do linear reciprocating motion (or swing motion) hydraulic actuator. It is simple in structure, reliable in operation. When it is used to realize reciprocating motion, it can be exempted from speed reducer, and there is no transmission gap, and movement is stable, so it is widely used in the hydraulic system of various machines. Hydraulic cylinder output force and the effective area of piston and the pressure difference of its two sides are proportional;Hydraulic cylinder is basically composed of cylinder and cylinder cover, piston and piston rod, sealing device, buffer device and exhaust device.

[0003] Hydraulic cylinder cylinder in the processing, one end is supported on the support table or positioning member that can be lifted, the other end is clamped by clamping mechanism, and currently clamping mechanism mostly uses chuck. The clamping mechanism for hydraulic cylinder cylinder processing of prior art is generally clamped by the clamping jaw on chuck, and the stability of clamping mechanism during processing still has room for improvement, therefore, there is an urgent need for an improved technology to solve the above problems existing in the prior art. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of clamping mechanism for hydraulic cylinder cylinder processing with Good stability, first, extend clamping column is made to the inner wall of hydraulic cylinder cylinder by the cooperation of driving disc and clamping jaw, then the outer wall of hydraulic cylinder cylinder is pressed by the cooperation of pressing nut, the clamping of cylinder end is realized, stability is greatly improved, to ensure processing or detection precision, to solve the problem proposed in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of clamping mechanism for hydraulic cylinder cylinder processing with Good stability, including chuck main body, driving disc, clamping jaw, extend clamping column, screw rod and pressing nut, the surface of chuck main body is evenly provided with several guide slots along radial direction, driving disc is arranged in chuck main body, the clamping jaw has several and is slidably matched with guide slot one-to-one, oblique grain is formed on the inner side surface of clamping jaw, clamping jaw is matched with driving disc by oblique grain, the end of clamping jaw away from oblique grain is ladder structure, extend clamping column is vertically arranged at ladder structure, screw rod is arranged at the outer end of each extend clamping column and along guide slot direction, screw rod is provided with pressing nut, pressing nut is provided with pressing plate close to the end of corresponding extend clamping column.

[0006] Preferably, the utility model provides a kind of clamping mechanism for hydraulic cylinder barrel processing of good stability, wherein the driving disc includes disc body, spiral protrusion and conical gear ring, the both ends of disc body are respectively provided with spiral protrusion and conical gear ring, the oblique grain of claw is slidably matched with spiral protrusion.

[0007] Preferably, the utility model provides a kind of clamping mechanism for hydraulic cylinder barrel processing of good stability, wherein the side wall of chuck body is uniformly provided with several bevel gears, each bevel gear is engaged with conical gear ring, and the outer end of each bevel gear is provided with an internal hexagonal hole.

[0008] Preferably, the utility model provides a kind of clamping mechanism for hydraulic cylinder barrel processing of good stability, wherein the guide groove is provided with guide protrusion on both sides, the recess is slidably matched with guide protrusion, which is opened in the both sides of claw.

[0009] Preferably, the utility model provides a kind of clamping mechanism for hydraulic cylinder barrel processing of good stability, wherein the threaded hole is opened in the radial direction along the guide groove direction, and the screw rod end is screwed into the threaded hole and welded.

[0010] Preferably, the utility model provides a kind of clamping mechanism for hydraulic cylinder barrel processing of good stability, wherein the chuck body is provided with connecting seat away from the one end of guide groove.

[0011] Compared with prior art, the utility model has the advantages that:

[0012] The outer side surface of one end of claw step structure is vertically provided with extension clamping column, each extension column is provided with screw rod in the direction of guide groove, and pressing nut is arranged on screw rod; when clamping hydraulic cylinder barrel, first, extension clamping column is abutted against the inner wall of hydraulic cylinder barrel by the cooperation of driving disc and claw, then the outer wall of hydraulic cylinder barrel is pressed by the cooperation of pressing nut, clamping of cylinder end is realized, stability is greatly improved, so as to ensure processing or detection precision. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is side view structure schematic diagram of the utility model;

[0014] Figure 2 It is front view structure schematic diagram of the utility model;

[0015] Figure 3 It is claw bottom view structure schematic diagram of the utility model;

[0016] Figure 4 It is driving disc front view structure schematic diagram;

[0017] Figure 5 It is driving disc rear view structure schematic diagram.

[0018] In the figure: chuck body 1, driving disc 2, chuck jaw 3, guide groove 4, oblique pattern 5, extension clamping column 6, screw 7, pressing nut 8, pressing plate 9, bevel gear 10, guide protrusion 11, connecting seat 12, disc body 201, spiral protrusion 202, conical tooth ring 203. DETAILED DESCRIPTION

[0019] The technical scheme of the present application will be described clearly and completely below in combination with the embodiments of the present application and the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0020] It should be noted that in the description of the present application, it should be noted that the terms "inner", "outer", "upper", "lower", "two sides", "one end", "the other end", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0021] Please refer to Figures 1-3 The present application provides a kind of technical scheme: a kind of clamping mechanism for hydraulic cylinder barrel processing with good stability, including chuck body 1, driving disc 2, chuck jaw 3, extension clamping column 6, screw 7 and pressing nut 8, chuck body 1 The surface is evenly provided with a plurality of guide grooves 4 along the radial direction, chuck body 1 is provided with driving disc 2 inside, chuck jaw 3 has a plurality of and is one-to-one corresponding with guide groove 4 and slidingly cooperates, guide groove 4 both sides are provided with guide protrusion 11, recess is opened in the both sides of chuck jaw 3, recess and guide protrusion 11 slidingly cooperate, through the cooperation of guide protrusion 11 and the both sides recess of chuck jaw 3, it is guaranteed that chuck jaw 3 will not be separated from guide groove 4, oblique pattern 5 is opened in the inside surface of chuck jaw 3, chuck jaw 3 is cooperated with driving disc 2 through oblique pattern 5, the end of chuck jaw 3 away from oblique pattern 5 is stepped structure, extension clamping column 6 is vertically provided at stepped structure of chuck jaw 3, the outer end of each extension clamping column 6 and along the direction of guide groove 4 are provided with screw 7, extension clamping column 6 is provided with threaded hole along the radial direction and along the direction of guide groove 4, the end of screw 7 is screwed into threaded hole and is welded fixed, cooperation of threaded hole and screw 7 is adopted to guarantee the structural stability of screw 7, screw 7 is provided with pressing nut 8, pressing nut 8 is provided with pressing plate 9 close to the end of corresponding extension clamping column 6, chuck body 1 is provided with connecting seat 12 away from guide groove 4 end, to realize and the output shaft of external motor is connected, to realize the rotation of chuck body 1.

[0022] As Figures 4-5 shown, the driving disc 2 includes disc body 201, spiral protrusion 202 and conical tooth ring 203, the two end faces of disc body 201 are respectively provided with spiral protrusion 202 and conical tooth ring 203, the oblique lines 5 of claw 3 are slidably connected with spiral protrusion 202, through the structure of driving disc 2, when driving disc 2 rotates, through spiral protrusion 202, each claw 3 along corresponding guide groove 4 is driven to move, the side wall of chuck body 1 is uniformly provided with a plurality of bevel gears 10, each bevel gear 10 is engaged with conical tooth ring 203, the outer end of each bevel gear 10 is provided with an internal hexagonal hole, through the cooperation of bevel gear 10 and conical tooth ring 203, the rotation of driving disc 2 is realized, and then claw 3 is driven to move.

[0023] The processing method and use principle are as follows: first, the extending clamping column 6 is radially penetrated through the threaded hole, then the end of the extending clamping column 6 is welded with one end of the stepped structure of the claw 3, and the axis direction of the threaded hole is consistent with the length direction of the claw 3. Then, the pressing nut 8 is screwed on the screw rod 7, and the end of the screw rod 7 is screwed into the threaded hole of the extending clamping column 6 and is welded. The claw with the extending clamping column 6 is inserted into the guide groove 4 from the outside of the chuck body 1, then the driving disc 2 is placed inside the chuck body 1, and the spiral protrusion 202 is matched with the oblique lines 5 of each claw 3. Then, the bevel gear 10 with an internal hexagonal hole at the outer end is installed on the side wall of the chuck body 1, and the bevel gear 10 is engaged with the conical tooth ring 203 of the driving disc 2 respectively. The outer end of the bevel gear 10 is rotatably connected with the side wall of the chuck body 1 through a limiting piece. Finally, the connecting seat 12 is installed on the rear side of the chuck body 1, and the assembly is completed. In use, the connecting seat 12 is connected with the output shaft of the motor, each extending clamping column 6 is inserted into the end of the hydraulic cylinder barrel, and any bevel gear 10 is rotated by using a hexagonal wrench. The bevel gear 10 is matched with the conical tooth ring 203 of the driving disc 2, so as to drive the driving disc 2 to rotate. When the driving disc 2 rotates, the spiral protrusion 202 is matched with the oblique lines 5 of the claw 3, so as to drive each claw 3 to move along the guide groove 4 to the outer end, until each extending clamping column 6 abuts against the inner wall of the hydraulic cylinder barrel. Then, the pressing nut 8 is rotated, so that the pressing plate 9 of the pressing nut 8 is pressed on the outer wall of the hydraulic cylinder barrel, and the clamping and fixing of the end of the hydraulic cylinder barrel are completed. The utility model has the advantages of reasonable structure, the outside surface of one end of the stepped structure of the claw 3 is vertically provided with the extending clamping column 6, each extending column is provided with the screw rod 7 along the guide groove 4 direction, the screw rod 7 is provided with the pressing nut 8, when the hydraulic cylinder barrel is clamped, the extending clamping column 6 is first abutted against the inner wall of the hydraulic cylinder barrel through the cooperation of the driving disc 2 and the claw 3, then the outer wall of the hydraulic cylinder barrel is pressed through the cooperation of the pressing nut 8, the clamping of the end of the cylinder barrel is realized, and the stability is greatly improved, so as to ensure the machining or detection precision.

[0024] The parts not described in the utility model are known to those skilled in the art.

[0025] Finally to be explained is: the above specific embodiments only to illustrate the technical solutions of the utility model and not limit, although the utility model is described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified and equivalent replaced, without departing from the spirit and scope of the technical solutions of the utility model, it should be covered in the scope of the claims of the utility model.

Claims

1. A clamping mechanism for processing a cylinder of a hydraulic cylinder having high stability, characterized by: The chuck body (1) is provided with a plurality of guide grooves (4) uniformly distributed along the radial direction on the surface, and the inside of the chuck body (1) is provided with a driving disc (2); the chuck claw (3) is in one-to-one correspondence with the guide grooves (4) and is in sliding fit with the guide grooves (4), and the inner side surface of the chuck claw (3) is provided with a slanting pattern (5); the chuck claw (3) is in fit with the driving disc (2) through the slanting pattern (5); the end of the chuck claw (3) away from the slanting pattern (5) is in a stepped structure; the chuck claw (3) is provided with an extension clamping column (6) vertically arranged at the stepped structure; the outer end of each extension clamping column (6) is provided with a screw rod (7) along the direction of the guide groove (4); the screw rod (7) is provided with a pressing nut (8); and the pressing nut (8) is provided with a pressing plate (9) close to one end of the corresponding extension clamping column (6).

2. The clamping mechanism for processing the hydraulic cylinder barrel with good stability according to claim 1, characterized in that: The driving disc (2) comprises a disc body (201), a spiral protrusion (202) and a conical tooth ring (203); the two end surfaces of the disc body (201) are respectively provided with the spiral protrusion (202) and the conical tooth ring (203); and the slanting pattern (5) of the chuck claw (3) is in sliding fit with the spiral protrusion (202).

3. The clamping mechanism for processing the hydraulic cylinder barrel with good stability according to claim 1, characterized in that: The side wall of the chuck body (1) is uniformly provided with a plurality of bevel gears (10); each bevel gear (10) is in mesh with the conical tooth ring (203); and the outer end of the bevel gear (10) is provided with an inner hexagonal hole.

4. The clamping mechanism for processing the hydraulic cylinder barrel with good stability according to claim 1, characterized in that: The guide grooves (4) are provided with guide protrusions (11) on both sides; the chuck claw (3) is provided with a groove on both sides; and the groove is in sliding fit with the guide protrusions (11).

5. The clamping mechanism for processing the hydraulic cylinder barrel with good stability according to claim 1, characterized in that: The extension clamping column (6) is provided with a threaded hole along the radial direction and along the direction of the guide groove (4); and the end of the screw rod (7) is screwed into the threaded hole and is welded and fixed.

6. The clamping mechanism for processing the hydraulic cylinder barrel with good stability according to claim 1, characterized in that: The chuck body (1) is provided with a connecting seat (12) away from the guide groove (4).

Images