Practical device for machining taper hole of eccentric sleeve through common horizontal lathe

Abstract

The utility model discloses a practical device for machining a taper hole in an eccentric bushing by a common horizontal lathe, which comprises an eccentric positioning sleeve, one end of the eccentric positioning sleeve is connected to a horizontal lathe chuck, an inner cylindrical cavity consistent with the outer circumference outline of the eccentric bushing to be machined is arranged in the eccentric positioning sleeve, the inner cylindrical cavity is arranged in an inclined manner, and the eccentric bushing to be machined is arranged in the cavity. The inclined angle is half of the taper angle of the inner conical cavity of the to-be-machined eccentric bushing, a positioning key is arranged in the inner cylindrical cavity and matched with the to-be-machined eccentric bushing to prevent the to-be-machined eccentric bushing from rotating circumferentially, a plurality of pressing plate base plates are arranged on the circumference of the outer end of the eccentric positioning sleeve, one end of each pressing plate base plate protrudes out of the inner cylindrical cavity, and the other end of each pressing plate base plate protrudes out of the inner cylindrical cavity. The pressing plate base plate is used for pressing and fixing the end of the to-be-machined eccentric sleeve and fixedly connected with the eccentric positioning sleeve through bolts. The eccentric bushing can be machined on a common horizontal lathe, the machining precision of the eccentric bushing can be guaranteed, the requirement for batch production is met, related equipment does not need to be purchased, and cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing eccentric sleeves of single-cylinder cone crushers, in particular to a practical device for processing cone holes of eccentric sleeves on a common horizontal lathe. Background Art

[0002] The eccentric sleeve is a sleeve mounted on the main shaft, usually made of copper alloy. Its appearance is similar to a cylinder, but it does not completely coincide with the central axis of the main shaft, which is why it is called an "eccentric" sleeve. The inner hole of the eccentric sleeve fits tightly with the outer diameter of the main shaft to form a friction pair, so that the eccentric sleeve can rotate along the main shaft, but can remain relatively stable to a certain extent.

[0003] During the crushing process, the eccentric design of the eccentric sleeve causes it to move axially as the main shaft rotates, thereby changing the shape of the crushing chamber. This eccentric movement can effectively adjust the size of the crushing chamber, thereby affecting the entry and discharge of materials to achieve the crushing requirements of different particle sizes. The movement of the eccentric sleeve can also change the geometry of the crushing chamber, thereby adjusting the size of the discharge opening. This is very important for controlling the particle size and distribution of the final product.

[0004] The eccentric sleeve needs to fit closely with the spindle to ensure that it can rotate smoothly and remain relatively stable during the eccentric movement. Therefore, the processing accuracy requirements are very high, involving aspects such as size, shape and surface quality. The eccentric sleeve is usually made of copper alloy material, which has good wear resistance and thermal conductivity. However, during the processing, copper alloy is relatively difficult to process, and appropriate processes and tools need to be used to avoid problems such as overheating and deformation.

[0005] There are five main processing methods for the eccentric sleeve of the current single-cylinder cone crusher: 1. Simple horizontal lathe tooling method; 2. Horizontal and vertical lathe method; 3. Horizontal lathe special boring tooling method; 4. Hole first and then external cylindrical mandrel method; 5. CNC boring method. Among these five methods, method 1 is relatively simple, but the tool bar is long, the cutting amount is small, the vibration is large, the accuracy and efficiency are poor; method 2 does not require any tooling, but the efficiency is low, and the accuracy is completely determined by the operator's level; method 3 has high processing accuracy, but the tooling structure is complex, and the tool bar guide rail is easily worn by chips and dust; method 4 has a large change in the axial position of the eccentric sleeve, and the mandrel size is large, which makes processing inconvenient and the efficiency is low; method 5 is the direction of mechanical processing, but it needs to purchase related equipment and the cost is high. Utility Model Content

[0006] In view of the above problems, the invention provides a practical device for processing eccentric sleeves on ordinary sleeper cars, which can ensure the processing accuracy of the eccentric sleeves and meet the requirements of mass production without the need to purchase related equipment and has a low cost.

[0007] To solve the above technical problems, the utility model provides the following technical solutions: a practical device for processing the tapered hole of an eccentric sleeve on an ordinary horizontal lathe, comprising an eccentric positioning sleeve, one end of the eccentric positioning sleeve being connected to the horizontal lathe chuck, the interior of the eccentric positioning sleeve being arranged with an inner cylindrical cavity consistent with the outer circumferential contour of the eccentric sleeve to be processed, the inner cylindrical cavity being inclined, the inclination angle being half of the cone angle of the inner conical cavity of the eccentric sleeve to be processed, a positioning key being arranged inside the inner cylindrical cavity, the positioning key cooperating with the eccentric sleeve to be processed to prevent the eccentric sleeve to be processed from circumferential rotation, a plurality of pressure plate pads being arranged on the circumference of the outer end portion of the eccentric positioning sleeve, one end of the pressure plate pad protruding from the inner cylindrical cavity, for pressing and fixing the end portion of the eccentric sleeve to be processed, the pressure plate pad being fixedly connected to the eccentric positioning sleeve by bolts.

[0008] Preferably, a second cavity is arranged at the inner end of the inner cylindrical cavity of the eccentric positioning sleeve, a push-pull plate is arranged in the second cavity, the push-pull plate is connected to a double-headed screw, and the double-headed screw passes through the eccentric positioning sleeve to connect the tensioning device.

[0009] Preferably, the tensioning device includes a first pressure plate and a second pressure plate fixed in position, a steel pipe connector is arranged between the first pressure plate and the second pressure plate, the double-headed screw passes through the first pressure plate, the steel pipe connector and the second pressure plate, and locking nuts and washers are arranged at the ends of the double-headed screw.

[0010] Preferably, a supporting roller is arranged below the eccentric positioning sleeve close to the working end.

[0011] Preferably, it also includes a row of taper hole turning tools and an indexable inner surface turning tool.

[0012] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0013] The utility model enables the eccentric sleeve to be processed by using a common horizontal lathe without the need to purchase special equipment.

[0014] The utility model has the characteristics of simple structure and universality, and the eccentric sleeves with similar structures can use this structure.

[0015] The utility model ensures the processing accuracy of the eccentric sleeve with an ingenious tooling structure and has low requirements on the operator. An ordinary operator can complete the processing according to the operating instructions.

[0016] The utility model has the advantages of convenient clamping, high processing efficiency and easy removal of parts after processing.

[0017] The utility model adopts knife row processing, the knife bar has high rigidity, the knife bar is not easy to deform during processing, the processing distance is long, the processing range is large, and the chip removal is smooth during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a cross-sectional view of this embodiment;

[0019] Among them: 1. eccentric positioning sleeve, 20. lifting eye screw, 2. horizontal lathe chuck, 3. eccentric sleeve to be processed, 4. inner cylindrical cavity, 5. inner conical cavity, 6. positioning key, 7. pressure plate pad, 8. bolt, 9. push-pull plate, 10. double-headed screw, 11. tensioning device, 12. first pressure plate, 13. second pressure plate, 14. steel pipe connector, 15. locking nut, 16. washer, 17. supporting roller, 18. tapered hole turning tool row, 19. indexable inner surface turning tool. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purpose and efficacy of the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.

[0021] Example 1

[0022] like Figure 1As shown, a practical device for processing eccentric sleeve taper holes on an ordinary horizontal lathe comprises an eccentric locating sleeve 1, one side of the eccentric locating sleeve 1 is provided with a lifting screw 20 for lifting use, one end of the eccentric locating sleeve 1 is connected to the horizontal lathe chuck 2, the interior of the eccentric locating sleeve 1 is provided with an inner cylindrical cavity 4 which is consistent with the outer circumferential contour of the eccentric sleeve 3 to be processed, the inner cylindrical cavity 4 is inclined, and the inclination angle is half of the cone angle of the inner conical cavity 5 of the eccentric sleeve 3 to be processed, a locating key 6 is provided in the inner cylindrical cavity 4, the locating key 6 cooperates with the eccentric sleeve 3 to be processed to prevent the eccentric sleeve 3 to be processed from circumferential rotation, a plurality of pressure plate pads 7 are provided on the circumference of the outer end portion of the eccentric locating sleeve 1, one end of the pressure plate pad 7 protrudes from the inner cylindrical cavity 4, and is used to press and fix the end of the eccentric sleeve 3 to be processed, and the pressure plate pad 7 is fixedly connected to the eccentric locating sleeve 1 by bolts 8. A second cavity 8 is provided at the inner end of the inner cylindrical cavity 4 of the eccentric positioning sleeve 1, and a push-pull plate 9 is provided in the second cavity 8. The push-pull plate 9 is connected to a double-headed screw 10, and the double-headed screw 10 passes through the eccentric positioning sleeve 1 and is connected to a tensioning device 11. The tensioning device 11 includes a first pressing plate 12 and a second pressing plate 13 fixed in position, a steel pipe connector 14 is provided between the first pressing plate 12 and the second pressing plate 13, the double-headed screw 10 passes through the first pressing plate 12, the steel pipe connector 14 and the second pressing plate 13, and a locking nut 15 and a washer 16 are provided at the end of the double-headed screw 10. A support roller 17 is provided below the working end of the eccentric positioning sleeve 1. During operation, the eccentric locating sleeve 1 is installed on the horizontal car chuck 2, and the eccentric locating sleeve 1 is positioned with the tail locating block. After the eccentric locating sleeve 1 is tightened with the tightening device 11, the working end is supported by the supporting roller 17. After adjusting the tooling, the eccentric locating sleeve 1 is locked on the horizontal car chuck 2 with bolts, and the eccentric sleeve 3 to be processed is installed into the eccentric locating sleeve 1, and the locating key 6 is used to position and prevent rotation. After the eccentric sleeve 3 to be processed is pressed, the eccentric sleeve 3 to be processed is processed with the tapered hole tool row 18 and the indexable inner surface turning tool 19.

[0023] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A practical device for machining eccentric lathe taper holes on a common horizontal lathe, characterized in that: It includes an eccentric positioning sleeve, one end of which is connected to the horizontal car chuck, the interior of the eccentric positioning sleeve is provided with an inner cylindrical cavity consistent with the outer circumferential contour of the eccentric sleeve to be processed, the inner cylindrical cavity is inclined, and its inclination angle is half of the cone angle of the inner conical cavity of the eccentric sleeve to be processed, a positioning key is arranged inside the inner cylindrical cavity, the positioning key cooperates with the eccentric sleeve to be processed for positioning, and prevents the eccentric sleeve to be processed from circumferential rotation, a plurality of pressure plate pads are arranged on the circumference of the outer end portion of the eccentric positioning sleeve, one end of the pressure plate pad protrudes from the inner cylindrical cavity, and is used to press and fix the end portion of the eccentric sleeve to be processed, and the pressure plate pad is fixedly connected to the eccentric positioning sleeve by bolts.

2. A practical device for machining eccentric lathe taper holes on a common horizontal lathe according to claim 1, characterized in that: A second cavity is arranged at the inner end of the inner cylindrical cavity of the eccentric positioning sleeve, a push-pull plate is arranged in the second cavity, the push-pull plate is connected to a double-headed screw, and the double-headed screw passes through the eccentric positioning sleeve to connect the tensioning device.

3. A practical device for machining eccentric lathe taper holes on a common horizontal lathe according to claim 2, characterized in that: The tensioning device includes a first pressing plate and a second pressing plate fixed in position, a steel pipe connector is arranged between the first pressing plate and the second pressing plate, the double-headed screw passes through the first pressing plate, the steel pipe connector and the second pressing plate, and locking nuts and washers are arranged at the ends of the double-headed screw.

4. A practical device for machining eccentric lathe taper holes on a common horizontal lathe according to claim 1, characterized in that: A supporting roller is arranged below the eccentric positioning sleeve close to the working end.

5. A practical device for machining eccentric lathe taper holes on a common horizontal lathe according to claim 1, characterized in that: It also includes a row of tools for turning taper holes and indexable inner surface turning tools.

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