CN201799879U

CN201799879U - Key groove centering clamp

Info

Publication number: CN201799879U
Application number: CN 201020235858
Authority: CN
Inventors: 尹水生
Original assignee: Shanghai Datun Energy Holding Co Ltd
Current assignee: Shanghai Datun Energy Holding Co Ltd
Priority date: 2010-06-24
Filing date: 2010-06-24
Publication date: 2011-04-20
Anticipated expiration: 2020-06-24

Abstract

The utility model discloses a key groove centering clamp, which belongs to machining clamps and is suitable for processing key grooves through a general machine tool. The key groove centering clamp comprises a clamp base fixedly mounted on a workbench, a key groove formed in the center of the upper end surface of the clamp base, and a positioning core block mounted on the key groove. The key groove centering clamp also comprises a clamp body formed by combining two half V-shaped blocks, wherein the two half V-shaped blocks are symmetrically mounted on the two sides of the positioning core block on the clamp base and are fixedly connected through connecting bolts. The key groove centering clamp provided by the utility model has the benefits of reasonable structure, high centering precision, accurate and reliable positioning, high production efficiency and low rejection rate, is convenient for operation and assembly, can greatly improve the degree of symmetry of the key groove, and has the characteristic that the clamp can efficiently realize the degree of symmetry of the key groove.

Description

Keyway centering anchor clamps

Technical field

The utility model relates to a kind of keyway centering anchor clamps, belongs to machining fixture.Be applicable to machine tool processing keyway usefulness.

Background technology

When on axle, processing keyway, important quality index during symmetry, and along with the development of producing is more and more higher to its requirement.When the batch machining keyway,, generally all be to adopt the method for anchor clamps location to solve in order to enhance productivity.But owing to be subjected to foozle, alignment error and the operator's of inevitable anchor clamps the influence of factors such as tool setting error, generally be difficult to the symmetry that reaches very high, for example: when a collection of motor shaft of processing, the symmetry of keyway requires in the 0.005mm scope, with conventional method processing, percent defective height.

Summary of the invention

The purpose of this utility model is the not high shortcoming of machining accuracy for overcoming conventional art, a kind of keyway anchor clamps of accurately centering are provided, and these anchor clamps can be realized the symmetry of keyway, easy for installation, accurate positioning efficiently, and the production efficiency height, percent defective is low.

The utility model is realized with following technical scheme: a kind of keyway centering anchor clamps, it is characterized in that comprising the clamp base that is fixedly mounted on the workbench, and the center, upper surface on clamp base has a keyway, and the location pellet is installed on keyway; Also comprise the clamp body that two and half V-blocks are combined into, two and half V-block symmetries are installed in the both sides of the location pellet on the clamp base and use connecting bolt fixedly connected; The bottom of two and half V-blocks is fixed on the clamp base.

Owing to adopted said structure, the symmetrical centre of V-block must be by the centre of gyration of milling cutter, and very high precision is arranged.With this anchor clamps location workpiece (axle),, just can realize the centering of axle by the intrinsic self-centering function of V-block.The keyway that processes under condition like this can reach higher symmetry.

The beneficial effects of the utility model are: rational in infrastructure, the location is reliable, accuracy of alignment is high, easy to operate, can improve the symmetry of keyway greatly, be characterized in that these anchor clamps can realize the symmetry of keyway efficiently, easy for installation, accurate positioning, and production efficiency height, percent defective is low.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Accompanying drawing is the utility model structural representation.

Among the figure: 1, clamp body, 1-1, half V-block, 2, connecting bolt, 3, the location pellet, 4, attachment screw, 5, clamp base, 6, hold-down screw, 7, workbench, 8, workpiece, 9, keyway.

The specific embodiment

As shown in drawings, keyway centering anchor clamps have a usefulness hold-down screw 6 to be fixedly mounted on clamp base 5 on the workbench 7, and the center, upper surface on clamp base 5 has a keyway 9, and location pellet 3 is installed on keyway; The combined type V-block structure that clamp body 1 adopts two and half V-block 1-1 to be combined into, two and half V-blocks wherein adopt 45 steels to do, and through modifier treatment HB220-250, seting welding carbide piece on locating surface also in case of necessity is to improve wearability and contact strength.Add and process with double length man-hour, mill out from the centre processing back, is divided into two, and pairing is used.Location pellet 3 its thickness are the width of keyway 9, because of its will with the locating slot tight fit on the clamp base 5, so can leave a small amount of grinding allowance, for joining adjustment when doing.Two and half V-block 1-1 symmetries are installed in the both sides of the location pellet 3 on the clamp base 5 and use connecting bolt 2 fixedly connected; The bottom of two and half V-block 1-1 is fixed on the clamp base 5 with attachment screw 4.

To be example with finger cutter on the end mill, at first clamp base 5 usefulness hold-down screws 6 are connected on the workbench 7, note making the center line of the center line of milling cutter by locating slot.Adjustment finishes the back except that the length feed that keeps workbench with moving up and down, and all the other possible motion total deadlocks are also eliminated the gap.After this, start lathe, cotter mill cutter with the processing keyway processes locating slot on clamp base 5, reliable for locating, the degree of depth of processing should not be too shallow, be generally 1.5 times of groove width, and certain precision is arranged, measure actual groove width then, thickness according to measured value reconditioning location pellet 3, both are closely cooperated mutually, and slightly interference, load onto location pellet 3 after, be combined into a whole V-block with about 2 two V-blocks of connecting bolt, at this moment, the symmetrical centre of V-block must be by the centre of gyration of milling cutter, and very high precision is arranged.With this anchor clamps location workpiece 8,, just can realize the centering of axle by the intrinsic self-centering function of V-block.The keyway that processes under condition like this can reach higher symmetry.Install errorless after, tighten attachment screw 4, anchor clamps can bearing load, mixes clamping device again, just the keyway of processing work 8 reliably.

Claims

1. keyway centering anchor clamps is characterized in that comprising the clamp base (5) that is fixedly mounted on the workbench (7), have a keyway (9) in the center, upper surface of clamp base (5), and location pellet (3) is installed on keyway; Also comprise the clamp body (1) that two and half V-blocks (1-1) are combined into, two and half V-blocks (1-1) symmetry is installed in the both sides of the location pellet (3) on the clamp base (5) and uses connecting bolt (2) fixedly connected, and the bottom of two and half V-blocks (1-1) is fixed on the clamp base (5).