CN202607324U

CN202607324U - Centering clamp capable of eliminating blank tolerance

Info

Publication number: CN202607324U
Application number: CN 201220111774
Authority: CN
Inventors: 宋志敏
Original assignee: Ling Yun Industrial Corp Ltd
Current assignee: Ling Yun Industrial Corp Ltd
Priority date: 2012-03-23
Filing date: 2012-03-23
Publication date: 2012-12-19
Anticipated expiration: 2022-03-23

Abstract

The utility model discloses a centering clamp capable of eliminating blank tolerance. The centering clamp is used for solving the centering problem of blank parts. The technical scheme is as follows: the centering clamp comprises a clamp body, a positioning structure and clamping structure, wherein the positioning structure comprises two positioning pins which are symmetrically arranged on the clamp body; the positioning pins penetrate through the clamp body to be in clearance fit with the clamp body; work surfaces are arranged at the upper ends of the positioning pins; and the work surfaces respectively consist of two eccentric semi-cylindrical surfaces and a transition surface which is used for connecting the two semi-cylindrical surfaces. According to the centering clamp, two self-centering positioning pins are used for positioning blank surfaces of parts; and by rotating the self-centering positioning pins, the distance between each work surface and each contact surface of each part changes continuously to adapt to the size changes of castings and realize the centering double-side positioning of a workpiece, so that the superposition between the center line of the workpiece and the center line of two threaded holes is ensured and the alignment requirement of the two threaded holes of the workpiece is satisfied. The centering clamp capable of eliminating the blank tolerance has the advantages of simple structure, easiness in realization and reliability in positioning, and capacity of ensuring the product quality while obviously improving the production efficiency.

Description

A kind of centralizer of eliminating the blank tolerance

Technical field

The utility model relates to a kind of positioner that is used for machining, particularly can eliminate the centralizer of blank tolerance.

Background technology

In field of machining, anchor clamps are indispensable devices of realizing product processing.Anchor clamps generally include: location structure, clamping structure, tool setting guide structure, clamp body etc.Wherein the design of location structure reaches the selected pith that is the production of realization product lot quantity, improves production efficiency and product quality.A kind of part such as Fig. 6, shown in Figure 7, these part both sides screwed hole 4-1 need carry out machining, and the B position and the appearance and size that are indicated among the figure are casting surface, because casting technique, casting position dimensional tolerance fluctuates in ± 1.5 millimeters scopes.This part is if the screwed hole that adopts two traditional one-sided locate modes to process can not satisfy neutral requirement.For reaching the product processing request, the prior art way is before processing, the relevant blank position of part to be measured one by one, processes by different sizes in batches, and it is low to have production efficiency, artificial problem such as big consuming time.

The utility model content

The utility model is used to overcome the defective of above-mentioned prior art and the centralizer that a kind of operation is simple, the location can be eliminated the blank tolerance reliably is provided.

The alleged problem of the utility model is that following technical scheme solves:

A kind of centralizer of eliminating the blank tolerance; Special feature is: it comprises clamp body; Location structure and clamping structure, said location structure are two alignment pins that are symmetricly set on the clamp body, and said alignment pin passes clamp body and its matched in clearance; The alignment pin upper end is a working face, and working face is made up of with the transition face that is connected two semi-cylindricals two eccentric semi-cylindricals.

The above-mentioned centralizer of eliminating the blank tolerance, said alignment pin bottom set gradually adjustment handle and clamp nut.

The above-mentioned centralizer of eliminating the blank tolerance, said clamping structure comprise location-plate that is arranged on the clamp body both sides and the holding screw that passes location-plate, and clamping structure also comprises the screw rod that is arranged on the clamp body centre, and screw rod top is provided with pressing plate, clamp nut.

The screwed hole that the utility model adopts tradition two one-sided locate modes to process to the part blank surface is difficult to satisfy the problem that neutrality is required; Designed a kind of centralizer of eliminating the blank tolerance, these anchor clamps adopt two self-centering alignment pins to part blank face location, and the working face of said self-centering alignment pin is made up of two eccentric semi-cylindricals and transition face; Rotation self-centering alignment pin; Distance between its working face center and the part contact-making surface constantly changes, thereby adapts to the change in size of foundry goods, realizes workpiece centering bilateral location; Guarantee work centre line and two screwed holes center line weight with, satisfy workpiece two screwed holes to neutral requirement.The utility model is simple in structure, be easy to realize, the location is reliable, and when obviously enhancing productivity, product quality is able to guarantee.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the structural representation of alignment pin;

Fig. 4 is the upward view of Fig. 3;

Fig. 5 is an adjustment handle arrangement sketch map;

Fig. 6 is the structural representation of part to be processed;

Fig. 7 is the vertical view of Fig. 6.

Label is represented as follows in the accompanying drawing: 1. clamp body; 2. holding screw; 3. location-plate; 4. part; 5. screw rod; 6. pressing plate; 7. clamp nut; 8. alignment pin; 8-1. working face; 9. adjustment handle; 10. clamp nut.

The specific embodiment

Referring to Fig. 1-5, the utility model comprises clamp body 1, and location structure and clamping structure, said location structure are two alignment pins 8 that are symmetricly set on the clamp body, alignment pin pass clamp body and with clamp body matched in clearance, the centerline collineation of two alignment pins.The upper end of alignment pin 8 is working face 8-1; Working face is made up of with the transition face that is connected two semi-cylindricals two eccentric semi-cylindricals; Set gradually adjustment handle 9 and clamp nut 10 in the alignment pin bottom; Connect for inside and outside four directions between adjustment handle and alignment pin, alignment pin bottom and clamp nut are spirally connected.

Referring to Fig. 1, Fig. 2; Clamping structure comprises location-plate 3 that is fixed on clamp body 1 both sides and the holding screw 2 that passes location-plate, and clamping structure also comprises the screw rod 5 that is arranged on the clamp body centre, and screw rod top is provided with pressing plate 6 and clamp nut 7; For ease of compressing operation, pressing plate 6 is provided with open slot.

Referring to Fig. 1, Fig. 2, Fig. 6, Fig. 7, when the utility model uses, earlier part to be processed 4 is placed on the clamp body 1, the working face 8-1 of two alignment pins 8 is positioned at the B place of part; Adjustment handle through the left and right alignment pin that is rotatably connected respectively then; Make the alignment pin rotation; The working face of alignment pin distance between its center and the part contact-making surface in rotary course constantly changes, and until part to be processed 4 is adjusted to suitable position, satisfies neutral requirement; Locking holding screw and clamp nut, fixedly part to be processed can carry out machining to its both sides screwed hole 4-1.

Claims

1. the centralizer that can eliminate the blank tolerance; It is characterized in that: it comprises clamp body (1); Location structure and clamping structure, said location structure are two alignment pins (8) that are symmetricly set on the clamp body, and said alignment pin passes clamp body and its matched in clearance; The alignment pin upper end is working face (8-1), and working face is made up of with the transition face that is connected two semi-cylindricals two eccentric semi-cylindricals.

2. the centralizer of eliminating the blank tolerance according to claim 1 is characterized in that: said alignment pin (8) bottom sets gradually adjustment handle (9) and clamp nut (10).

3. the centralizer of eliminating the blank tolerance according to claim 2; It is characterized in that: said clamping structure comprises location-plate (3) that is arranged on clamp body (1) both sides and the holding screw (2) that passes location-plate; Clamping structure also comprises the screw rod (5) that is arranged on the clamp body centre, and screw rod top is provided with pressing plate (6), clamp nut (7).