CN211305638U - Clamp for positioning inner hole of part - Google Patents

Abstract

The utility model discloses an anchor clamps for part hole location, be equipped with the open-ended barrel that link up on a section of thick bamboo wall, establish can axial motion's guide arm, activity are established in the barrel on the guide arm with the opening complex slider of barrel, establish follow on the slider outstanding tensioning plate of opening and being located adopt elastic material's backing plate between slider and the tensioning plate, the slider with adopt the wedge face to cooperate in the axial between the guide arm, work as the guide arm with when producing relative motion between the barrel, make slider, tensioning plate and backing plate for the barrel produces radial direction displacement. The utility model discloses the backing plate that utilizes elastic material has higher intensity and good elasticity, combines this kind of characteristic and the non-circular hole part hole positioning fixture structure of this material for the first time, can fix a position non-circular hole part, and can fix a position this type of part of multi-disc certain dimension simultaneously.

Description

Clamp for positioning inner hole of part

Technical Field

The utility model belongs to anchor clamps, concretely relates to anchor clamps for part hole location.

Background

In the machine tool clamp field, various utility model designs are numerous, including the anchor clamps that are used for the part hole location. The existing part inner hole positioning clamp is mainly used for positioning a circular inner hole part, but the process and the technology of the clamp for positioning the non-circular inner hole part are not mature, and the positioning of the inner hole of the non-circular inner hole part with a certain size in the manufacturing process of mechanical parts is difficult.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anchor clamps for part hole location to solve the problem of certain size's non-circular hole part hole location difficulty in the machine parts manufacturing process.

Realize the utility model discloses the technical scheme that the purpose was adopted as follows:

the utility model provides an anchor clamps for part hole location, be equipped with the open-ended barrel that link up on a section of thick bamboo wall, establish can axial motion's guide arm, activity are established in the barrel on the guide arm with the opening complex slider of barrel, establish follow on the slider outstanding tensioning plate of opening and being located adopt elastic material's backing plate between slider and the tensioning plate, the slider with adopt the wedge face to cooperate in the axial between the guide arm, work as the guide arm with when producing relative motion between the barrel, make slider, tensioning plate and backing plate for the barrel produces radial direction displacement.

The openings on the cylinder body are three and evenly distributed along the circumferential direction of the cylinder body, and the three sliding blocks on the guide rod are respectively matched with the three openings on the cylinder body.

The tensioning plate is a plurality of blocks which are axially arranged.

The plurality of tensioning plates are axially limited by limiting components arranged at the front and the back of the cylinder body.

The limiting component at least comprises a locking nut which is in threaded connection with the cylinder body and is used for restricting the plurality of tensioning plates to move in the axial direction relative to the cylinder body.

The slider with be equipped with the locating piece in the axial between the barrel, the tip of barrel is equipped with through the screw with slider and locating piece for the solid fixed ring of barrel axial spacing part tail end, accessible adjustment tail end is fixed the ring and is restrained the slider for the displacement of barrel axial direction with the cooperation of barrel.

The sliding block is in clearance fit with the tail end fixing ring and the positioning block.

The sliding block is matched with the guide rod through a dovetail groove.

Advantageous effects

1) The utility model discloses can fix a position non-circular hole part, and can fix a position this type of part of multi-disc certain size simultaneously.

2) The utility model discloses the backing plate that utilizes elastic material has higher intensity and good elasticity, combines this kind of characteristic and the non-circular hole part hole positioning fixture structure of this material for the first time to can realize the hole location of non-circular hole part.

3) The utility model discloses when the relative barrel of well guide arm was axial motion combine to make the slider be radial motion for the guide arm through the wedge face with the slider, the slider drives the tensioning plate simultaneously and is radial motion and the hole of puller or pine from non-circular hole part for the guide arm, and this kind is converted into radial motion by axial motion to the positioning fixture structure of non-circular hole part is the adoption for the first time.

4) The sliders are uniformly distributed into three groups, and the arrangement mode can better realize the inner hole positioning of the non-circular inner hole parts.

The technical scheme of the utility model is further explained in the following with the attached drawings.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is an isometric view of the present invention.

Detailed Description

Referring to fig. 1-4, the present invention provides a fixture for positioning inner holes of parts, including a cylinder 18 having a through opening 22 on a cylinder wall, a guide rod 5 disposed in the cylinder 18 and capable of moving axially, a slide 14 movably disposed on the guide rod 5 and engaged with the opening 22 of the cylinder 18, a tension plate 10 disposed on the slide 14 and protruding from the opening 22, and a backing plate 12 disposed between the slide 14 and the tension plate 10 and made of an elastic material, wherein the slide 14 and the guide rod 5 are engaged with each other by a wedge surface 19 in an axial direction, and when the guide rod 5 and the cylinder 18 move relatively, the slide 14, the tension plate 10 and the backing plate 12 are displaced in a radial direction relative to the cylinder 18;

the number of the openings 22 on the cylinder 18 is three, and the number of the sliding blocks 14 on the guide rod 5 is three, and the three sliding blocks are respectively matched with the three openings 22 on the cylinder 18;

the tensioning plates 10 are a plurality of blocks which are axially arranged;

the plurality of tensioning plates 10 are axially limited by limiting parts arranged in front of and behind the cylinder 18;

the limiting component at least comprises a locking nut 2 which is in threaded connection with the cylinder 18 and is used for restricting the plurality of tensioning plates 10 to move relative to the axial direction of the cylinder 18;

a positioning block 4 is axially arranged between the sliding block 14 and the cylinder 18, a tail end fixing ring 13 of a limiting component for axially limiting the sliding block 14 and the positioning block 4 relative to the cylinder 18 is arranged at the end part of the cylinder 18 through a screw 15, and the tail end fixing ring 13 can be adjusted by an adjusting screw 15 to be matched with the cylinder to restrain the displacement of the sliding block 14 relative to the cylinder 18 in the axial direction;

the sliding block 14 is matched with the guide rod 5 by adopting a dovetail groove.

The utility model discloses further structure does:

(1) as shown in fig. 1, the utility model discloses a hexagon socket head cap screw 7, little packing ring 8 and spring washer 9 pass through flange 6 with barrel 18 and fix on a work piece electricity main shaft, and guide arm 5 and 18 clearance fit of barrel can be in barrel 18 axial motion, and guide arm 5 is connected with the pull rod on this electricity main shaft's the taut hydro-cylinder in order to obtain the axial displacement for electricity main shaft.

(2) As shown in fig. 1, the limiting component for limiting the plurality of tensioning plates 10 comprises tail end fixing rings 13 arranged at two ends of the tensioning plates 10, an end plate 11, a position supplementing block 3, a gasket 1 and a locking nut 2, a wedge-shaped surface 19 on a guide rod 5 is combined with a wedge-shaped surface 19 of a sliding block 14, the upper surface of the sliding block 14 is combined with the lower surface of a backing plate 12, and the upper surface of the backing plate 12 is combined with the lower surfaces of the end plate 11, the tensioning plates 10 and the position supplementing block 3; as shown in fig. 3, the guide bar 5, the slider 14, the shim plate 12, and the positioning block 3 are connected together by the dovetail groove 20, the wedge surface 19, the square groove 21, and the like, so that the radial displacement of the slider 14, the shim plate 12, and the positioning block 3 with respect to the guide bar 5 is restricted, and the positional relationship between the tension plate 10 and the end plate 11, and the shim plate 12 and the slider 14 is the same as the positional relationship between the positioning block 3, the shim plate 12, and the slider 14 shown in fig. 3.

(3) As shown in fig. 1, the tail end fixing ring 13 is fixed with the cylinder 18 through a screw 15, a spring washer 16 and a washer 17, the lock nut 2 is fixed on the cylinder 18 through a thread, the end fixing ring 13 and the cylinder 18 sandwich the end plate 11, the tension plate 10, the position supplementing block 3 and the washer 1, and the end plate 11, the tension plate 10, the position supplementing block 3 and the washer 1 are constrained by adjusting the lock nut 2 relative to the axial direction of the cylinder 18.

The locking nut 2 can be a precision locking nut, and since the sizes of the parts to be positioned may be different each time, the size (thickness, height, etc.) of the corresponding tensioning plate 10 may also be changed, at this time, the precision locking nut 2 is required to adjust the gap between the clamping plate and the tail end fixing ring 13, the end plate 11, the tensioning plate 10, the complementary block 3, and the washer 1 so that the end plate 11, the tensioning plate 10, the complementary block 3, etc. can smoothly and non-loosely make radial displacement relative to the cylinder 18, and the characteristic that the precision locking nut has stable and durable locking force is utilized. The locking nut 2 can accordingly also be replaced by other mechanical structures which can function similarly.

(4) As shown in fig. 1, the positioning block 4 and the slider 14 are sandwiched between the tail end fixing ring 13 and the barrel 18, the tail end fixing ring 13 is fastened to the barrel 18 through the screw 15, and the slider 14, the tail end fixing ring 13 and the positioning block 4 are in clearance fit with respect to the axial direction of the barrel 18, so as to ensure that the slider 14 does not significantly displace in the axial direction with respect to the barrel 18 and that the radial displacement is smooth and unimpeded.

(5) The sliding block 14 and the plurality of tensioning plates 10 are constrained in the radial direction and the axial direction relative to the cylinder 18, and then the sliding block 14 and the tensioning plates 10 are driven to displace in the radial direction relative to the cylinder 18 through the combination of the wedge surface 19 of the guide rod 5 and the wedge surface 19 of the sliding block 14 in a certain stroke of the guide rod 5, namely the inner hole of the non-circular inner hole part can be tightly pushed and loosened (the inner diameter of the non-circular hole is not consistent in the axial direction);

(6) as shown in fig. 3, the backing plate 12 can be made of polyurethane rubber, which can ensure sufficient tension and has certain flexibility, so that the backing plate 12 can adapt to the irregular shape of the inner hole of the non-circular inner hole part in different degrees, thereby pushing all the tensioning plates 10 to tightly push the inner hole of the non-circular inner hole part, and achieving stable inner hole positioning effect.

Claims (8)

1. A fixture for positioning an inner hole of a part is characterized by comprising a cylinder body, a guide rod, a sliding block, a tensioning plate and a base plate, wherein a through opening is formed in the cylinder wall of the cylinder body, the guide rod is arranged in the cylinder body and can move axially, the sliding block is movably arranged on the guide rod and is matched with the opening of the cylinder body, the tensioning plate is arranged on the sliding block and protrudes out of the opening, the base plate is located between the sliding block and the tensioning plate and is made of elastic materials, the sliding block is matched with the guide rod in an axial direction through a wedge-shaped surface, and when the guide rod and the cylinder body move relatively, the sliding block, the tensioning plate and the base.

2. A fixture for locating the internal bore of a part as claimed in claim 1, wherein said tension plate is formed of axially aligned blocks.

3. The fixture for positioning the inner hole of the part as claimed in claim 2, wherein the number of the openings on the cylinder is three, and the number of the sliding blocks on the guide rod is three, and the three sliding blocks are respectively matched with the three openings on the cylinder.

4. The fixture for locating the inner hole of the part as claimed in claim 3, wherein the plurality of tension plates are axially limited by limiting members disposed at the front and rear of the cylinder.

5. The fixture for positioning the inner hole of the part as claimed in claim 4, wherein the limiting member comprises at least one locking nut threadedly coupled to the cylinder for restraining the plurality of tension plates from moving in the axial direction relative to the cylinder.

6. The clamp for positioning the inner hole of the part as claimed in claim 5, wherein a positioning block is axially arranged between the sliding block and the barrel, a tail end fixing ring of a limiting component for axially limiting the sliding block and the positioning block relative to the barrel is arranged at the end of the barrel through a screw, and the sliding block can be restrained from moving relative to the barrel in the axial direction by adjusting the matching of the tail end fixing ring and the barrel.

7. The fixture for positioning the inner hole of the part as claimed in claim 6, wherein the sliding block is in clearance fit with the tail end fixing ring and the positioning block.

8. A fixture for locating the internal hole of part as claimed in claim 7, wherein said slide is matched with said guide rod by dovetail slot.

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