CN204799989U - Solid device that expands of accurate processing mine car wheel pair - Google Patents

Abstract

The utility model discloses a solid device that expands of accurate processing mine car wheel pair relates to a mine car wheel pair processing field. The utility model provides a mine car wheel pair both sides hole axiality is difficult to guarantee and the inefficiency scheduling problem at present. This solid device that expands of accurate processing mine car wheel pair is including the head that expands, the cover that expands, lead screw, fixed backing plate and the jack panel that expands, top of the head face middle part and the lead screw vertical welding of expanding is fixed, expand the cover including inflation cover and fixed block, inflation cover and fixed block are the whole cast, the middle part of fixed block is provided with the lead screw hole that the lead screw passed. Use the utility model has the advantages of being simple in structure and convenient in operation, guarantee the machining precision and greatly improved production efficiency.

Description

Precise processing of expansion device for mine wheel set

technical field

The utility model relates to a mining wheel pair processing device, in particular to an expansion device for precisely processing a mining wheel pair.

Background technique

The mine wheel set is an important component of the narrow gauge transport mine car up and down the mine. It is not only the bearing mechanism of the mine car, but also the running mechanism. Generally, when processing the wheels of a mining wheel set, the rim or tread of the wheel is fixed by the fixture on the lathe, and then the inner hole on one side is turned first, and the wheel is turned after the inner hole on the tread side or the inner hole on the rim side is processed. The front and rear direction of the wheel and re-fix the tread or rim of the wheel before turning the inner hole on the other side. This is mainly because the ring-shaped protrusion must be retained between the inner hole on the tread side of the wheel and the inner hole on the rim side. , so the inner hole on the tread side and the inner hole on the rim side of the wheel need to be completed step by step from both sides. However, a single wheel is integrally cast, and due to various reasons when casting the wheel, the rim or tread of the integrally cast wheel cannot fully guarantee a certain accuracy, that is, there is a certain deformation in the rim and tread of the wheel, that is, unprocessed The rim and tread of the wheel are respectively used as the datum plane for the processing of the inner holes on both sides and the coaxiality of the inner holes on both sides cannot be guaranteed. The sequential turning of the hole and the inner hole on the rim side cannot guarantee the product accuracy required for the inner hole on the tread side of the wheel and the inner hole on the rim side after turning. Therefore, the existing lathes are fixed on the outer side of the wheel twice. And the equipment for turning the inner hole on the tread side and the inner hole on the rim side of the wheel cannot guarantee the high precision required by the mine wheel. At the same time, the processing operator needs to spend a lot of time debugging when processing the inner hole on the other side, which not only reduces the production efficiency of the mine wheel set to a large extent, but also makes it difficult to ensure the accuracy of the product by manual debugging.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, and provide a bulging device for precisely processing mining wheel sets with simple structure, convenient operation and greatly improved production efficiency.

In order to achieve the above purpose, the utility model provides an expansion device for precisely processing a mine wheel set, the expansion set device for processing a mine wheel set includes a lathe clamp, the mine wheel set includes a wheel, and the wheel includes a tread side The inner hole and the inner hole on the side of the rim. The expansion device includes an expansion head, an expansion sleeve, a screw rod, a fixed backing plate and an expansion nut. The expansion head is in the shape of a platform, and the expansion head includes an expansion head top surface and an expansion head bottom surface , the diameter of the bottom surface of the expansion head is smaller than the diameter of the inner hole on the tread side or the diameter of the inner hole on the rim side, and the diameter of the top surface of the expansion head is smaller than the diameter of the bottom surface of the expansion head; The other end of the head is provided with an external thread corresponding to the expansion nut; the expansion sleeve includes an expansion sleeve and a fixed block, the expansion sleeve and the fixed block are integrally cast, and the outer diameter of the expansion sleeve is smaller than that of the tread side in the minimum state The diameter of the inner hole or the diameter of the inner hole on the rim side, the inner cavity of the expansion sleeve is set as a platform-shaped inner cavity corresponding to the expansion head; the middle part of the fixed block is provided with a screw hole through which the screw rod passes, and the fixed backing plate sleeve Connect to the screw rod between the lathe fixture and the expansion nut.

The fixing block is in the shape of a cylinder.

The outer end of the expansion sleeve is set as four expansion sheets of equal size, and the four expansion sheets are arranged equidistantly at the outer end of the expansion sleeve.

The beneficial effects of the utility model are: the expansion device of the utility model for precisely processing the mine wheel set has a simple structure and is easy to operate; due to the cooperative use of the expansion head and the expansion sleeve, the lathe fixture is actually formed from the wheels of the mine wheel set. The position of the inner hole on the tread side or the inner hole on the rim side is fixed, instead of fixing on the outer side of the wheel rim or tread twice, that is, the inner hole on the other side is processed based on the inner hole on one side. The coaxiality of the inner holes on both sides of the machined wheel is ensured, which fundamentally and effectively prevents the inner holes on both sides of the machined wheel from being unable to work due to the deformation of the wheel tread or the outer side of the wheel rim. The problem of ensuring coaxiality; in addition, the combined application of the expansion head and the expansion sleeve makes it very convenient for the operator to process the inner hole on the other side of the wheel, which greatly improves the production efficiency while ensuring the machining accuracy.

Below in conjunction with the accompanying drawings, the expansion and solidification device of the precise processing mining wheel set of the present utility model will be further described.

Description of drawings

Fig. 1 is a sectional view when the utility model is in use;

Fig. 2 is the axial sectional view of the utility model;

Fig. 3 is an exploded view of the utility model.

In the figure: 1. Expansion head; 2. Expansion sleeve; 3. Screw rod; 4. Fixed backing plate; 5. Expansion nut, 6. Lathe clamp, 7. Wheel, 8. Tread, 9. Inner hole on the side of the tread , 10, rim, 11, inner hole on rim side, 12, top surface of expansion head, 13, bottom surface of expansion head, 14, external thread, 15, expansion sleeve, 16, fixed block, 17, screw hole, 18, expansion piece.

Detailed ways

As shown in Fig. 1, Fig. 2 and Fig. 3, the expansion and solidification device of the precision processing mine wheel pair in this embodiment includes a lathe fixture 6, and the mine wheel pair includes a wheel 7, and the wheel includes a tread 8 side inner hole 9 and a rim 10 Side inner hole 11. The expansion device includes an expansion head 1, an expansion sleeve 2, a screw rod 3, a fixed backing plate 4 and an expansion nut 5. The expansion head 5 is in the shape of a table, and the expansion head 1 includes an expansion head top surface 12 and an expansion head bottom surface 13. The expansion head bottom surface The diameter of 13 is smaller than the diameter of the inner hole 9 on the tread side or the diameter of the inner hole 11 on the rim side, and the diameter of the top surface 12 of the expansion head is smaller than the diameter of the bottom surface 13 of the expansion head; The other end of the expansion head 1 is provided with an external thread 14 corresponding to the expansion nut 5; the expansion sleeve 2 includes an expansion sleeve 15 and a fixed block 16, the expansion sleeve 15 and the fixed block 16 are integrally cast, and the outer diameter of the expansion sleeve 15 In the minimum state, it is smaller than the diameter of the inner hole 9 on the tread side or the diameter of the inner hole 11 on the rim side, and the inner cavity of the expansion sleeve 15 is set as a platform-shaped inner cavity corresponding to the expansion head 1; The threaded mandrel hole 17 passed, the lathe fixture 6 directly fixes the fixed block 16, and the fixed backing plate 4 is sleeved on the screw mandrel 3 between the lathe fixture 6 and the expansion nut 5. The fixed block 16 is cylindrical. The outer end of the expansion sleeve 15 is set as four expansion sheets 18 of equal size, and the four expansion sheets 18 are equidistantly arranged at the outer end of the expansion sleeve 15 .

Because there is an annular protrusion between the tread side inner hole 9 and the rim side inner hole 11 of the mine wheel pair wheel 7, the processing of the tread side inner hole 9 and the rim side inner hole 11 cannot be done in one step or on both sides simultaneously. , and because the whole wheel 7 is integrally cast, the various factors that exist when casting the wheel 7 make the tread 8 of the wheel 7 and the outside precision of the rim 10 not high so that it is impossible to ensure that the two fixations of the wheel 7 by the lathe clamp 6 all meet the requirements. Precise machining of the inner hole 9 on the tread side and the inner hole 11 on the rim side. Therefore, adopting the bulging device of the utility model for precisely processing the mining wheel pair can effectively solve the precise machining of the tread side inner hole 9 or the rim side inner hole 11 of the wheel 7 by the lathe. First, the tread 8 is fixed by the lathe clamp 6 Or after processing the inner hole 9 on the tread side or the inner hole 11 on the rim side of the rim 10, pass the screw 3 through the expansion sleeve 2 and then place the expansion sleeve 2 into the inner hole 9 on the tread side or the rim side of the wheel 7 hole 11, fix the fixed block 16 with the lathe jig 6 and then socket the fixed backing plate 4 along the screw rod 3 and tighten it with the expansion nut 5, so that the expansion head 1 can gradually move to the outside of the wheel 7 so that the expansion sleeve 2 The sheet 18 is stretched in the inner hole 9 on the tread side or the inner hole 11 on the rim side, so that the expansion device is fixed from the inner hole 9 on the tread side or the inner hole 11 on the rim side of the wheel 7 and then the inner hole on the rim side is fixed. 11 or the tread side inner hole 9 is processed by a lathe, so that the coaxiality of the tread side inner hole 9 or the rim side inner hole 11 can be well guaranteed, and the production efficiency of the operator has also been greatly improved.

Claims (3)

1. the swollen fixing apparatus that precisely processing mine tram wheel is right, the right swollen fixing apparatus of described processing mine tram wheel comprises lathe jig, described mine tram wheel is to comprising wheel, described wheel comprises tread side endoporus and wheel rim side endoporus, it is characterized in that, described swollen fixing apparatus comprises swollen head, expansion set, screw mandrel, fixing backing plate and swelling nut, described swollen head is stage body type, swollen head comprises face, the swollen crown and swollen head bottom surface, the diameter of swollen head bottom surface is less than tread side diameter of bore or wheel rim side diameter of bore, and the diameter in face, the swollen crown is less than the diameter of swollen head bottom surface; Described swollen crown Middle face and screw mandrel vertical welding are fixed, and screw mandrel is provided with the external screw thread corresponding with swelling nut relative to the other end of swollen head; Described expansion set comprises expansion sleeve and fixed block, and expansion sleeve and fixed block are monoblock cast, and the external diameter of described expansion sleeve is less than tread side diameter of bore or wheel rim side diameter of bore when minimum state, expansion sleeve inner chamber is set to the inner chamber of the stage body type corresponding with swollen; The middle part of described fixed block is provided with the screw hole that screw mandrel passes, and fixed bolster sleeve-board is received on the screw mandrel between lathe jig and swelling nut.

2. the swollen fixing apparatus that accurate processing mine tram wheel according to claim 1 is right, it is characterized in that, described fixed block is cylinder.

3. the swollen fixing apparatus that accurate processing mine tram wheel according to claim 1 is right, is characterized in that, the outer end of described expansion sleeve is set to equal swollen of four block sizes, and four pieces swollen in the equidistant arrangement in the outer end of expansion sleeve.