CN202388278U

CN202388278U - Crankshaft slotting fixture

Info

Publication number: CN202388278U
Application number: CN2011205372731U
Authority: CN
Inventors: 范罗荣
Original assignee: 无锡市航鹄科技有限公司
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2012-08-22

Abstract

The utility model relates to a crankshaft slotting fixture, which comprises a fixture seat. The crankshaft slotting fixture is characterized in that a positioning groove is arranged on the upper portion of the fixture seat, two stop blocks are bilaterally disposed in the positioning groove, a workpiece is clamped between the two stop blocks, adjusting screws are respectively connected onto the stop blocks, the stop blocks can be controlled via the adjusting screws to linearly move back and forth, one end of the each adjusting screw is abutted onto the corresponding stop block, and the other end of each adjusting screw extends out of the fixture seat. The adjusting screws internally match with two ends of the fixture seat in a threaded manner and can circularly rotate in the fixture seat. A positioning hole is disposed on the fixture seat, the workpiece is arranged in the positioning hole, and the inner diameter of the positioning hole matches with the outer diameter of the workpiece. A key slot consistent with the center of the positioning hole is arranged on the top of the fixture seat. The crankshaft slotting fixture is simple, compact and reasonable in structure, convenient in use, stable in positioning, high in precision and fast in machining speed, and is a milling machine fixture capable of accurately guaranteeing the central position and the angle-phase position of the key slot.

Description

The crank axle slotting attachment

Technical field

The utility model relates to a kind of fraise jig, and especially a kind of crank axle slotting attachment belongs to the machining tool clamp technical field.

Background technology

In machine industry, the parts in the frame for movement connect to fix often need be accomplished through key and keyway, and the machining accuracy of keyway has direct influence to the assembly precision of portion's cover.In the prior art, the clamping of keyway part is normally used milling machine accessory---and band scroll chuck dividing head reaches, and this clamping method machining accuracy is low, poor stability, speed are slow, the specification requirement that does not reach drawing.

Summary of the invention

The purpose of the utility model is to overcome the deficiency that exists in the prior art, and a kind of crank axle slotting attachment is provided, scientific and reasonable for structure, the accuracy of manufacture is high, easy and simple to handle, positioning stablity is reliable.

According to the technical scheme that the utility model provides, a kind of crank axle slotting attachment comprises clamping fixture seat, and characteristic is: the top at said clamping fixture seat is provided with locating slot, in locating slot, is symmetrical set two limited blocks, is used for the clamping workpiece between two limited blocks; Connect adjustment screw on the said limited block respectively, limited block can carry out the front and back straight line through adjustment screw control and move.

One end of said adjustment screw withstands limited block, and the other end stretches out clamping fixture seat.

Said adjustment screw matches with the internal thread at clamping fixture seat two ends, can make the limited block moving linearly in the clamping fixture seat.

Said clamping fixture seat is provided with locating hole, and workpiece setting is in locating hole, and the internal diameter of locating hole and the external diameter of workpiece are complementary.The top of said clamping fixture seat is provided with and the corresponding to keyway in locating hole center.

Said limited block is connected through holding screw with adjustment screw.

Top at said clamping fixture seat is provided with cover plate.Said cover plate is fixed through soket head cap screw.

The utility model is simple in structure, compact, reasonable, easy to use, positioning stablity, precision high, process velocity is fast, can accurately guarantee the fraise jig that keyway center and angular phasing are put.

Description of drawings

Fig. 1 is the front view of the utility model.

Fig. 2 is the vertical view of the utility model.

Fig. 3 is the left view of the utility model.

The specific embodiment

Below in conjunction with concrete accompanying drawing the utility model is described further.

Like Fig. 1～shown in Figure 3: the crank axle slotting attachment comprises clamping fixture seat 1, limited block 2, cover plate 3, adjustment screw 4, soket head cap screw 5, holding screw 6, workpiece 7, keyway 8 etc.

The utility model comprises clamping fixture seat 1, is provided with locating slot on the top of said clamping fixture seat 1, in locating slot, is symmetrical set between 2, two limited blocks 2 of two limited blocks to be used for clamping workpiece 7; Connect adjustment screw 4 respectively on the said limited block 2, limited block 2 can carry out the front and back straight line through adjustment screw 4 controls and move, and reaches the effect that clamps and unclamp workpiece 7;

Like Fig. 1, shown in Figure 2, an end of said adjustment screw 4 withstands limited block 2, and the other end stretches out clamping fixture seat 1; Adjust the formation clamping force through adjustment screw 4; The two ends of said clamping fixture seat 1 are provided with the internal thread with adjustment screw 4 couplings, and adjustment screw 4 rotatablely moves as circumference in the internal thread of clamping fixture seat 1, and straight line moved before and after drive limited block 4 was done in the locating slot of clamping fixture seat 1; The inclined to one side gesture plane of clamping work pieces 7, the angular phasing of fixation workpiece 7 is put;

As shown in Figure 3, said clamping fixture seat 1 is provided with locating hole, and workpiece 7 is arranged in the locating hole, and the external diameter of the internal diameter of locating hole and workpiece 7 is complementary, and limits the center of workpiece 7 with this;

As shown in Figure 1, the top of said clamping fixture seat 1 is provided with and the corresponding to keyway 8 in locating hole center, is convenient to machine tool chief axis centering center;

As shown in Figure 1, said limited block 2 is connected through holding screw 6 with adjustment screw 4, and holding screw 6 is used to limit 4 of adjustment screw and allows to do the circumference rotation;

As shown in Figure 3, be provided with four screw holes at the top of said clamping fixture seat 1, be used to install cover plate 3, four soket head cap screws of cover plate 3 usefulness 5 are fixing, reach limited block 2 and in locating slot, steadily move, and protect smear metal can not get in locating hole and the locating slot simultaneously;

Said clamping fixture seat 1 adopts the Cr12MoV structural alloy steel to make, at first modified one-tenth HRC30～35, and through roughing, fine finishining, all form and position tolerance guarantees within 0.02mm.

The course of work of the utility model: the platen face is close in the described crank axle milling clamper of the utility model bottom surface; Look for straight clamping fixture seat side; Make the milling clamper hole centre line parallel with lathe X axle; Tighten up milling clamper with pressing plate, within the symmetry 0.02mm of accuracy of reading 0.01mm lever meter centering milling clamper end face baseline trough center, said crank axle milling clamper adjustment is installed and is finished; Workpiece is packed in the milling clamper locating hole, and two ends adjustment screw 4 is rotated gently, makes limited block 2 clamp the inclined to one side gesture of parts to be processed place, limits angular phasing and puts; So far, part is installed and is finished.By milling the Cutter Body Processing with Machining Center keyway, guarantee the whole specification requirements of drawing as requested.The utility model design principle is scientific and reasonable, easy and simple to handle, quality is easy, steady quality, efficient high.

Claims

1. a crank axle slotting attachment comprises clamping fixture seat (1), it is characterized in that: the top at said clamping fixture seat (1) is provided with locating slot, in locating slot, is symmetrical set two limited blocks (2), is used for clamping workpiece (7) between two limited blocks (2); Connect adjustment screw (4) on the said limited block (2) respectively, limited block (2) carries out the front and back straight line through adjustment screw (4) control and moves.

2. crank axle slotting attachment as claimed in claim 1 is characterized in that: an end of said adjustment screw (4) withstands limited block (2), and the other end stretches out clamping fixture seat (1).

3. crank axle slotting attachment as claimed in claim 1 is characterized in that: said adjustment screw (4) matches with the internal thread at clamping fixture seat (1) two ends, can in clamping fixture seat (1), rotatablely move as circumference.

4. crank axle slotting attachment as claimed in claim 1 is characterized in that: said clamping fixture seat (1) is provided with locating hole, and workpiece (7) is arranged in the locating hole, and the external diameter of the internal diameter of locating hole and workpiece (7) is complementary.

5. crank axle slotting attachment as claimed in claim 4 is characterized in that: the top of said clamping fixture seat (1) is provided with and the corresponding to keyway in locating hole center (8).

6. crank axle slotting attachment as claimed in claim 1 is characterized in that: said limited block (2) is connected through holding screw (6) with adjustment screw (4).

7. crank axle slotting attachment as claimed in claim 1 is characterized in that: be provided with cover plate (3) at the top of said clamping fixture seat (1).

8. crank axle slotting attachment as claimed in claim 7 is characterized in that: said cover plate (3) is fixed through soket head cap screw (5).