CN205989201U - A kind of small-sized axle bed class accessory turning fixture - Google Patents

Abstract

The utility model belongs to the technical field of fixture equipment, and in particular relates to a clamping fixture for turning processing of small shaft seat parts, which includes a bottom plate, a connecting block, a T-shaped cylindrical clamping position, a counterweight, a pressing plate and a fastening bolt assembly. The bottom plate can be replaced and adjusted according to the clamping requirements of different parts; the connecting block is used to connect the base, the T-shaped cylindrical clamping position and the counterweight, and has the function of adjusting the rotation diameter of the base and the counterweight; the T-shaped cylindrical clamping position is used Mounting fixture on lathe chuck; pressure plate and fastening components are used to fix parts on the base. The utility model realizes the high-efficiency turning processing of the inner diameter, the arc surface and the end surface of small shaft seat parts.

Description

A Turning Fixture for Small Shaft Seat Parts

technical field

The utility model belongs to the technical field of fixture equipment, in particular to a clamping fixture for turning processing of small shaft seat parts.

Background technique

Shaft seat parts are the most commonly used parts in mechanical equipment and one of the most common processed parts in the machining industry. Due to the complex internal and external structures of such parts, and the distribution of supporting holes, semi-circular arc surfaces, bosses and other structures on the parts, the processing technology is relatively complicated, and generally requires multiple processing procedures such as scribing, boring, milling, and drilling. Such parts have high requirements on machining accuracy, and they often have to be roughed first and then finished to meet the accuracy requirements. As the most important processing equipment for such parts, the boring machine can complete most of the processing procedures such as face milling, aperture boring, and drilling.

Due to the characteristics of small size, high processing precision and complex structure, small shaft seat parts make it difficult to clamp, align and process during processing. The processing of small shaft seat parts has always been a major problem in mechanical processing, especially the processing of semicircular arc surfaces, grooves, ring grooves and other structures distributed on it, which is even more difficult. Ordinary boring machine processing is limited by the clamping structure and fastening components of the machine table, so it cannot be clamped normally. It is often necessary to make a special clamping mold, which is time-consuming and labor-intensive, and usually the production cost of the mold is greater than the processing cost of the parts. , the loss outweighs the gain; for some small-diameter boring processes, due to the large distance between the part and the machine tool spindle, it is necessary to use a slender tool bar for processing, and the slender tool bar has poor rigidity, resulting in machining accuracy that cannot meet the processing requirements; The machining of the arc surface structure is interrupted cutting. In order to protect the machine tool and the tool, the spindle speed is low, resulting in low machining efficiency; the machining of some grooves, ring grooves and other structures, using ordinary boring machine tools, is very easy to cause damage to the parts. interference, or even no processing at all.

In addition to the above processing problems, the processing of small shaft seat parts is difficult due to clamping. If the clamping is not firm enough, it is easy to cause injury to the operator, and there is a great safety hazard; intermittent chips, interference, etc. during processing, It is also easy to cause damage to parts and machine tools, which additionally increases processing costs.

Utility model content

The purpose of the utility model is to provide a fixture with simple structure and novel design, which can be used for turning, clamping and alignment of small shaft seat parts of different types, sizes and shapes.

In order to achieve the above object, the utility model provides the following technical solutions:

A clamping fixture for turning processing of small shaft seat parts, including a bottom plate 1, a connecting block 2 is fixed on one side of the bottom plate 1 through a fastening bolt assembly 6, and the two sides of the connecting block 2 and the bottom plate 1 are fastened through the fastening bolt assembly 6 A pressure plate 5 is fixed, and there is a gap between the pressure plate 5 and the bottom plate 1. The connecting block 2 is processed from a steel plate with a length of 300mm, a width of 70mm, and a thickness of 40mm. The transparent T-shaped slot 21, the upper side of the connecting block 2 is also provided with a T-shaped cylindrical clamping position 3, the T-shaped cylindrical clamping position 3 is a stepped shaft structure, and the T-shaped cylindrical clamping position 3 is divided into a clamping part 31 and a connecting part 32 Two parts, the clamping part 31 has an outer diameter of 60mm, and is clamped by the jaws of the lathe chuck, so that the entire fixture is clamped on the lathe, the connecting part 32 has an outer diameter of 120mm, and the end surface of the connecting part 32 is made with two threaded holes 33 , the threaded hole 33 connects the connecting part 32 passing through the T-shaped slot 21 with the connecting block 2 through the fastening bolt assembly 6; Made of a steel plate with a thickness of 50mm, a groove 41 with a depth of 40mm and a width of 70mm is machined on the surface of the steel plate 200mm×90mm. The bolt holes 42 are equally spaced, and the bolt holes 42 communicate with the grooves 41 , and the fastening bolt assembly 6 passes through the bolt holes 42 to fix the counterweight 4 on the connecting block 2 .

Preferably, the pressing plate 5 is made of a steel plate with a length of 100 mm, a width of 50 mm, and a thickness of 10 mm. A hole 51 through which the fastening bolt assembly 6 can pass is processed in the middle of the pressing plate 5. The hole 51 cooperates with the fastening bolt assembly 6 for fastening the fastening bolt assembly 6. The part is pressed against the base plate 1 of the fixture.

Preferably, the bottom plate 1 is processed from a steel plate with a length of 250mm, a width of 150mm, and a thickness of 40mm. After the through hole 11 is matched with the pressure plate 5, the parts are pressed on the base plate 1. Two second through holes 12 are provided on the side of the base plate 1, and the fastening bolt assembly 6 passes through the second through holes 12 to connect the base plate 1 and the connecting block. 2 connections.

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

The bottom plate of the utility model can be replaced according to the size of the parts, and can also be designed and manufactured according to the structural characteristics of the parts. The matched grooves make the part clamping surface fit closely with the surface of the bottom plate, which improves the clamping safety and the machining accuracy of the parts. The pressure plate can also be made into different shapes according to the structural requirements of the clamping parts of the parts, which has been popularized and applied in production practice. Compared with the boring machine processing, the utility model is used to turn small shaft seat parts, which can improve the processing efficiency. The efficiency is more than three times, and the utility model has the characteristics of strong applicability, easy interchange and the like.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present utility model;

Fig. 2 is a schematic diagram of the front view of Fig. 1;

Fig. 3 is the structural representation of base plate in Fig. 1;

Fig. 4 is the structural representation of connection block in Fig. 1;

Fig. 5 is a schematic diagram of the structure of the T-shaped cylinder clamping position in Fig. 1;

Fig. 6 is a schematic structural view of the counterweight in Fig. 1;

Fig. 7 is the structural representation of pressing plate in Fig. 1;

In the figure: 1. Bottom plate, 11. First through hole, 12. Second through hole, 2. Connecting block, 21. T-shaped slot, 3. T-shaped cylindrical clamping position, 31. Mounting part, 32. Connecting part , 33. Threaded hole, 4. Counterweight, 41. Groove, 42. Bolt hole, 5. Pressure plate, 51. Hole, 6. Fastening bolt assembly.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1-7, a clamping fixture for turning machining of small-sized shaft seat parts includes a bottom plate 1, a connecting block 2 is fixed on one side of the bottom plate 1 through fastening bolt assemblies 6, two sides of the connecting block 2, the bottom plate 1 is fixed with a pressure plate 5 through the fastening bolt assembly 6. The pressure plate 5 is made of a steel plate with a length of 100 mm, a width of 50 mm and a thickness of 10 mm. A hole (51) through which the fastening bolt assembly 6 can pass is processed in the middle of the pressure plate 5. 51 cooperates with the fastening bolt assembly 6, and is used to press the part on the bottom plate 1 of the fixture. There is a gap between the pressure plate 5 and the bottom plate 1. The bottom plate 1 is processed by a steel plate with a length of 250mm, a width of 150mm, and a thickness of 40mm. 1. The section is L-shaped. Two first through holes 11 are provided on the bottom plate 1. The fastening bolt assembly 6 passes through the first through holes 11 and cooperates with the pressure plate 5 to press the parts on the bottom plate 1. On the side of the bottom plate 1 There are two second through holes 12, and the fastening bolt assembly 6 passes through the second through holes 12 to connect the bottom plate 1 with the connection block 2. The connection block 2 is processed by a steel plate with a length of 300 mm, a width of 70 mm, and a thickness of 40 mm. The structure is in the shape of a "door". The middle part of the connecting block 2 is provided with a transparent T-shaped slot 21. The upper side of the connecting block 2 is also provided with a T-shaped cylindrical clamping position 3. The T-shaped cylindrical clamping position 3 is a stepped shaft structure. , The T-shaped cylindrical clamping position is divided into two parts: the clamping part 31 and the connecting part 32. The external diameter of the clamping part 31 is 60mm, and it is clamped by the jaws of the lathe chuck so that the entire fixture is clamped on the lathe, and the external diameter of the connecting part 32 is The diameter is 120mm, and the end face of the connection part 32 is made with two threaded holes 33, and the threaded holes 33 connect the connection part 32 passing through the T-shaped slot 21 with the connection block 2 through the fastening bolt assembly 6; The weight 4 and the counterweight 4 are made of a steel plate with a length of 200mm, a width of 90mm, and a thickness of 50mm. A groove 41 with a depth of 40mm and a width of 70mm is processed on the surface of the steel plate 200mm×90mm. One end of the groove 41 is connected to the counterweight The end faces of the blocks 4 are communicated, and four equally spaced bolt holes 42 are processed on both sides of the counterweight 4. The bolt holes 42 are connected with the grooves 41, and the fastening bolt assembly 6 passes through the bolt holes 42 to fix the counterweight 4 on the connection. on block 2.

When the utility model is used in practice, at first the T-shaped cylindrical clamping position 3 is anchored on the lathe chuck through the clamping position 31, the claws are tightened, and the T-shaped cylindrical clamping position 3 is clamped on the chuck; find out the need Process the datum plane of the part and place it on the base plate 1 of the fixture. After adjusting the position, place the part in the center of the base plate 1, press the part on the base plate 1 through the pressure plate 5; T-shaped slot 21 adjusts the turning diameter of the processed part, finds the position of the processing part of the part, and tightens the fastening bolt assembly 6 in the T-shaped slot 21, stops the machine tool, adjusts the clamping position of the counterweight 4, and through the static method , so that the utility model and the parts reach a balance of counterweight. Finally, set the cutting parameters, turn on the lathe, and carry out the turning processing of the part processing parts. If the phenomenon of machine tool vibration and loud noise occurs after turning on the machine tool, stop the machine tool and repeat the counterweight process. , until the counterweight is balanced.

Claims (3)

1. a kind of small-sized axle bed class accessory turning processes the fixture that is installed, including base plate（1）, base plate（1）Fastening is passed through on one side Bolt assembly（6）It is fixed with contiguous block（2）, contiguous block（2）Both sides, base plate（1）Above pass through fastening bolt assembly（6）It is fixed with pressure Plate（5）, pressing plate（5）With base plate（1）Between there is space it is characterised in that：Described contiguous block（2）By long 300mm, wide 70mm, the steel plate of thickness 40mm processes, and contour structures are in " door " font, contiguous block（2）Middle part be provided with one one lead to Saturating T-slot（21）, contiguous block（2）Upper side is additionally provided with T-shaped cylinder screens（3）, T-shaped cylinder screens（3）For multidiameter structure, T-shaped cylinder screens（3）Subpackage card division position（31）And connecting portion（32）Two parts, be installed position（31）External diameter is 60mm, passes through Lathe chuck claw clamps, and so that whole fixture is installed on lathe, connecting portion（32）External diameter is 120mm, connecting portion（32） End face make have two screwed holes（33）, screwed hole（33）By fastening bolt assembly（6）Will be through T-slot（21）Connection Position（32）With contiguous block（2）Connect；Contiguous block（2）Upper end is provided with balancing weight（4）, balancing weight（4）By a block length 200mm, wide 90mm, the steel plate of thickness 50mm is made, and it is 40mm that steel plate 200mm × 90mm Surface Machining goes out a depth, and width is 70mm's Groove（41）, groove（41）One end and balancing weight（4）End face communicates, balancing weight（4）Two sides respectively process 4 equidistant spiral shells Keyhole（42）, bolt hole（42）With groove（41）Insertion, fastening bolt assembly（6）Through bolt hole（42）By balancing weight（4）Gu It is scheduled on contiguous block（2）On.

2. as claimed in claim 1 a kind of small-sized axle bed class accessory turning processing be installed fixture it is characterised in that：Described pressure Plate（5）For a block length 100mm, wide 50mm, the steel plate of thick 10mm is made, pressing plate（5）Centre processing one is available for fastening bolt group Part（6）The hole passed through（51）, hole（51）With fastening bolt assembly（6）Cooperation, for being pressed on clamp bottom board by part（1）On.

3. as claimed in claim 1 or 2 a kind of small-sized axle bed class accessory turning processing be installed fixture it is characterised in that：Described Base plate（1）By a block length 250mm, wide 150mm, the steel plate of thickness 40mm processes, base plate（1）Section is L-shaped, base plate （1）It is provided with two first through holes（11）, fastening bolt assembly（6）Through first through hole（11）And and pressing plate（5）Will after cooperation Part is pressed on base plate（1）On, base plate（1）Side is provided with two the second through holes（12）, fastening bolt assembly（6）Through second Through hole（12）By base plate（1）With contiguous block（2）Connect.