CN211565225U

CN211565225U - Automatic clamping jig with high precision

Info

Publication number: CN211565225U
Application number: CN201922467656.5U
Authority: CN
Inventors: 陈常森; 丁少杰
Original assignee: O Stain Casting Co ltd
Current assignee: O Stain Casting Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-25
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses an automatic centre gripping tool that precision is high, including first base and second base, the upper end of first base is fixed with three reference column, the upper end mid-mounting of first base has the inflation piece, the lower extreme middle part of first base runs through and is fixed with first drawing the jar, the first piston rod that draws the jar runs through the inflation piece and is fixed with the tapering piece, be equipped with first fixture on the first base, the upper end of second base is fixed with the positioning disk, upper end one side of second base is fixed with two installation pieces. The utility model discloses a hydraulic clamping replaces manual clamping, has realized automatic centre gripping, and hydraulic clamping force stabilizes the part centre gripping and warp for a short time, and the machining precision is high, has still promoted product quality stability, and adopts twice process can process and accomplish the part, has saved lathe equipment, has improved equipment utilization and has improved the yield, and production efficiency is higher.

Description

Automatic clamping jig with high precision

Technical Field

The utility model relates to a centre gripping tool technical field especially relates to an automatic centre gripping tool that precision is high.

Background

The jig is a device for fixing a machining object to a correct position for construction or inspection in a machine manufacturing process, and is also called a jig, and in a broad sense, a device for quickly, conveniently and safely mounting a workpiece in any process is called a jig, and generally includes a positioning element, a clamping device, a tool setting guide element, an indexing device, a connecting element, a jig body, and the like.

The manual centre gripping tool of current most adoption, it has many drawbacks, and it is comparatively time-consuming in the use, intensity of labour is high, and the clamp force is unstable and leads to product precision poor stability, and occupation space is big and heavy, and the process is more, need accomplish a product through three processes, has the problem of inefficiency, for this reason, we have proposed the high automatic centre gripping tool of precision and have solved above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the high automatic centre gripping tool of a precision that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an automatic centre gripping tool that precision is high, includes first base and second base, the upper end of first base is fixed with three reference column, the upper end mid-mounting of first base has the inflation piece, the lower extreme middle part of first base runs through and is fixed with first drawing the jar, the piston rod of first drawing the jar runs through the inflation piece and is fixed with the tapering piece, be equipped with first fixture on the first base, the upper end of second base is fixed with the positioning disk, upper end one side of second base is fixed with two installation pieces, two the relative one side of installation piece is fixed with the dead lever jointly, the cover is equipped with the second ejector pin on the dead lever, the one end of second ejector pin is fixed with second angle locating piece, the upper end of second base is equipped with second fixture.

Preferably, the first clamping mechanism comprises two single-pulling cylinders fixed on two sides of the upper end of the first base respectively, clamping blocks are fixed at the tail ends of piston rods of the two single-pulling cylinders, a single-jacking cylinder is fixed at the upper end of the first base, a first ejector rod is fixed on the piston rod of the single-jacking cylinder, and a first corner positioning block is fixed at one end of the first ejector rod.

Preferably, the second clamping mechanism comprises a second pulling cylinder fixed on one side of the upper end of the second base, hinged pressing plates are fixed at the tail ends of piston rods of the second pulling cylinder, a corner cylinder is fixed on the other side of the upper end of the second base, and a pressing plate is fixed at the tail end of a piston rod of the corner cylinder.

Preferably, a spring is sleeved on the fixing rod, one end of the spring is fixed to one side of the second ejector rod, and the other end of the spring is fixed to one side of one of the mounting blocks.

Preferably, parts are placed at the upper ends of the positioning disc and the three positioning columns.

Preferably, a rubber pad is fixed at the lower end of the clamping block.

Compared with the prior art, the beneficial effects of the utility model are that:

when the part clamping device is used, a part is placed on the expansion block, the part falls on the three positioning columns, the part leans against the first corner positioning block to complete initial positioning, the oil inlet hydraulic first pull cylinder of the oil path drives the taper block to press downwards, the expansion block expands to stretch and tightly support the part, meanwhile, the single push cylinder pushes the first push rod to enable the part to lean against the first corner positioning block to complete angular positioning, two single pull rods pull downwards simultaneously on the next step to drive the two clamping blocks to assist in clamping the part, after the action is completed, the part can be subjected to primary processing, after the primary processing is completed, the part is taken out and placed on the positioning disc, the second push rod enables the second corner positioning block to lean against the part under the action force of the spring to complete the initial positioning, the oil inlet hydraulic second pull cylinder of the oil path drives the hinged type pressing plate to press downwards to clamp the part, meanwhile, the corner cylinder drives the pressing.

The utility model discloses a hydraulic clamping replaces manual clamping, has realized automatic centre gripping, and hydraulic clamping force stabilizes the part centre gripping and warp for a short time, and the machining precision is high, has still promoted product quality stability, and adopts twice process can process and accomplish the part, has saved lathe equipment, has improved equipment utilization and has improved the yield, and production efficiency is higher.

Drawings

Fig. 1 is a schematic view of an external structure of a first base of an automatic clamping fixture with high precision according to the present invention;

fig. 2 is a front view of a first base of the automatic clamping jig with high precision provided by the present invention;

fig. 3 is a top view of a second base of the automatic clamping jig with high precision according to the present invention;

fig. 4 is a front view of a second base of the automatic clamping jig with high precision provided by the present invention;

in the figure: the part 1, the expansion block 2, the positioning column 3, the first pull cylinder 4, the taper block 5, the single top cylinder 6, the first angle positioning block 7, the single pull cylinder 8, the first base 9, the clamping block 10, the second base 11, the first ejector rod 12, the hinge type press plate 13, the second pull cylinder 14, the second angle positioning block 15, the press plate 16, the corner cylinder 17, the second ejector rod 18, the spring 19 and the positioning disc 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, an automatic clamping jig with high accuracy comprises a first base 9 and a second base 11, wherein three positioning columns 3 are fixed to the upper end of the first base 9, a part 1 is convenient to place, an expansion block 2 is installed in the middle of the upper end of the first base 9, a first pull cylinder 4 penetrates through and is fixed to the middle of the lower end of the first base 9, a piston rod of the first pull cylinder 4 penetrates through the expansion block 2 and is fixed with a taper block 5, and when the first pull cylinder 4 drives the taper block 5 to press down through oil way oil inlet hydraulic pressure, the taper block 5 moves to enable the expansion block 2 to expand and stretch the part 1 tightly.

The utility model discloses in, be equipped with first fixture on first base 9, the convenience is tentatively added to part 1 and is held and processing, second base 11's upper end is fixed with positioning disk 20, part 1 has all been placed to positioning disk 20 and three reference column 3's upper end, be convenient for to placing of part 1, upper end one side of second base 11 is fixed with two installation pieces, the relative one side common fixation of two installation pieces has the dead lever, the cover is equipped with second ejector pin 18 on the dead lever, the removal of the second ejector pin 18 of being convenient for, the one end of second ejector pin 18 is fixed with second angle locating piece 15, second ejector pin 18 can drive second angle locating piece 15 when removing and remove.

The utility model discloses in, the cover is equipped with spring 19 on the dead lever, and one side at second ejector pin 18 is fixed to spring 19's one end, and one side at one of them installation piece is fixed to spring 19's the other end, and second ejector pin 18 makes second angle locating piece 15 lean on and accomplishes the primary importance at part 1 under spring 19's effort, and the upper end of second base 11 is equipped with second fixture.

The utility model discloses in, first fixture is including fixing two single jars 8 in first base 9 upper end both sides respectively, and two single jars 8's piston rod ends all are fixed with grip block 10, but pull-down drive two grip blocks 10 through two single pull rod 8 simultaneously and assist clamping part 1, and the lower extreme of grip block 10 is fixed with the rubber pad, can increase the friction, promotes the stability of centre gripping, still can protect part 1 surface.

The utility model discloses in, the upper end of first base 9 is fixed with single top jar 6, and the piston rod of single top jar 6 is fixed with first ejector pin 12, and the one end of first ejector pin 12 is fixed with first angle locating piece 7, and single top jar 6 promotes first ejector pin 12 and makes part 1 lean on tightly to accomplish angular positioning on first angle locating piece 7.

The utility model discloses in, second fixture draws jar 14 including the second of fixing in 11 upper end one sides of second base, and the second draws the piston rod end of jar 14 all to be fixed with hinge type clamp plate 13, draws jar 14 to drive hinge type clamp plate 13 through oil circuit oil feed hydraulic pressure second and pushes down and to press from both sides tight part 1, and the upper end opposite side of second base 11 is fixed with corner jar 17, and corner jar 17's piston rod end is fixed with clamp plate 16, and corner jar 17 can drive clamp plate 16 and compress tightly part 1.

In the utility model, when in use, a part 1 is placed on an expansion block 2, the part 1 falls on three positioning columns 3, the part 1 leans against a first corner positioning block 7 to complete initial positioning, an oil-way oil-inlet hydraulic first pull cylinder 4 drives a taper block 5 to press down, the expansion block 2 expands to support the part 1 tightly, meanwhile, a single-top cylinder 6 pushes a first ejector rod 12 to make the part 1 lean against the first corner positioning block 7 to complete angular positioning, two single-pull rods 8 pull down simultaneously to drive two clamping blocks 10 to assist in clamping the part 1, the part 1 can be processed for the first time after action is completed, the part 1 is taken out and placed on a positioning disc 20 after the initial processing is completed, a second ejector rod 18 leans against the part 1 to complete initial positioning under the action force of a spring 19, an oil-way oil-inlet hydraulic second pull cylinder 14 drives a hinge type pressing plate 13 to press down to clamp the part 1, and a corner cylinder 17 drives a pressing plate 16 to press the part 1 tightly, the clamping action is completed, and the part 1 is conveniently processed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an automatic centre gripping tool that precision is high, includes first base (9) and second base (11), its characterized in that: three positioning columns (3) are fixed at the upper end of the first base (9), an expansion block (2) is arranged in the middle of the upper end of the first base (9), a first pull cylinder (4) penetrates through the middle part of the lower end of the first base (9) and is fixed, a piston rod of the first pulling cylinder (4) penetrates through the expansion block (2) and is fixed with a taper block (5), a first clamping mechanism is arranged on the first base (9), a positioning disc (20) is fixed at the upper end of the second base (11), two mounting blocks are fixed on one side of the upper end of the second base (11), a fixed rod is fixed on the opposite side of the two mounting blocks, the fixed rod is sleeved with a second ejector rod (18), a second angle positioning block (15) is fixed at one end of the second ejector rod (18), and a second clamping mechanism is arranged at the upper end of the second base (11).

2. The automatic clamping jig with high precision as claimed in claim 1, wherein: first fixture is including fixing two single jars (8) in first base (9) upper end both sides respectively, two the piston rod end of single jar (8) of drawing all is fixed with grip block (10), the upper end of first base (9) is fixed with single top jar (6), the piston rod of single top jar (6) is fixed with first ejector pin (12), the one end of first ejector pin (12) is fixed with first angle locating piece (7).

3. The automatic clamping jig with high precision as claimed in claim 1, wherein: the second clamping mechanism comprises a second pulling cylinder (14) fixed on one side of the upper end of the second base (11), hinge type pressing plates (13) are fixed at the tail ends of piston rods of the second pulling cylinder (14), a corner cylinder (17) is fixed on the other side of the upper end of the second base (11), and a pressing plate (16) is fixed at the tail end of a piston rod of the corner cylinder (17).

4. The automatic clamping jig with high precision as claimed in claim 1, wherein: the fixed rod is sleeved with a spring (19), one end of the spring (19) is fixed to one side of the second ejector rod (18), and the other end of the spring (19) is fixed to one side of one of the mounting blocks.

5. The automatic clamping jig with high precision as claimed in claim 1, wherein: parts (1) are placed at the upper ends of the positioning disc (20) and the three positioning columns (3).

6. The automatic clamping jig with high precision as claimed in claim 2, wherein: the lower end of the clamping block (10) is fixed with a rubber pad.