CN218425628U - Cylinder sleeve machining equipment - Google Patents

Abstract

The application provides a cylinder sleeve machining device which comprises a rotating mandrel with a variable outer diameter and at least two groups of turning tools arranged in parallel to the radial direction of the mandrel, wherein the distances between the turning tools and the mandrel are adjustable, and at least one group of turning tools are cutting tools; the cylinder sleeve machining equipment further comprises a pushing assembly moving in a direction parallel to the axis of the mandrel, and the pushing assembly is used for pushing the turning material piece out of the open end of the mandrel. The cylinder sleeve machining equipment can cut off the end face of the cylinder sleeve and turn the outer circle of the cylinder sleeve under one-time clamping, simplifies the process flow and reduces the process circulation. And the cut-off excess material can fall from the open end of the mandrel under the pushing operation of the pushing assembly, so that the problem that the cut-off excess material at the end part interferes the clamping of the cylinder sleeve in the next working cycle in the automatic modification process of the production line is also avoided.

Description

Cylinder sleeve machining equipment

Technical Field

The utility model relates to a machining equipment technical field, concretely relates to cylinder liner machining equipment.

Background

The cylinder sleeve of the engine is a thin-wall barrel-shaped part, and a cylinder sleeve blank is manufactured by a centrifugal casting process. The cylinder sleeve blank obtained by the existing centrifugal casting process can be processed by a machine to obtain a semi-finished product of the cylinder sleeve.

The utility model discloses a utility model patent of the name of "a multistage turning lathe of cylinder liner" that notice number is CN214720582U discloses a cylinder liner turning lathe, has realized the one-off completion to the rough turning of cylinder liner and finish turning through the rough turning lathe tool and the finish turning lathe tool of branch putting. However, this lathe only involves the outer cylindrical turning of the cylinder liner, and since the centrifugally cast cylinder liner blank has a certain design margin in the longitudinal direction, it is necessary to cut both end faces. In the scheme, the cylinder sleeve blank needs to be subjected to outer circular surface machining through the turning lathe, end face cutting needs to be completed on other equipment, an additional clamping process is needed, and the process flow is complicated. In addition, the lathe is lack of a mechanism for assisting the assembling and disassembling of the cylinder sleeve, the lathe mainly needs manual operation to realize feeding and discharging, and the automation degree is low.

SUMMERY OF THE UTILITY MODEL

In view of the integration of end face cutting and the two processes of cylindrical turning and the automatic unloading problem that can not realize the post-processing turning material piece of current cylinder liner turning equipment can not realize, this application provides a cylinder liner machining equipment for automizing and producing the line.

The technical scheme of the application provides a cylinder sleeve machining device which comprises a rotating mandrel with a variable outer diameter and at least two groups of turning tools arranged in parallel to the radial direction of the mandrel, wherein the distances between the turning tools and the mandrel are adjustable, and at least one group of turning tools are cutting tools; the cylinder sleeve machining equipment further comprises a pushing assembly moving in a direction parallel to the axis of the mandrel, and the pushing assembly is used for pushing the turning material piece out of the open end of the mandrel.

Specifically, the lathe tool includes, sets up the first cutting tool on being on a parallel with the radial first guide rail of dabber, sets up the excircle lathe tool on being on a parallel with the radial second guide rail of dabber, the second guide rail can be on a parallel with the axial displacement of dabber.

Specifically, a second cutting-off knife is further arranged on the first guide rail, and the spacing distance between the first cutting-off knife and the second cutting-off knife is the length of the cylinder sleeve after the cylinder sleeve is processed.

Preferably, at least two groups of external turning tools are arranged on the second guide rail, and the difference value of the distance between the cutting edge of each external turning tool and the axis of the mandrel is set as a preset finish turning feeding amount.

Preferably, the mandrel is coaxially provided with an expansion sleeve.

Preferably, the pushing assembly is arranged on a pushing guide rail parallel to the axis direction of the mandrel, and the pushing assembly is in contact with one side, close to the driving end of the mandrel, of a cylinder sleeve clamped on the mandrel when moving.

The technical scheme of this application has set up cutting off cutter and lathe tool simultaneously in the radial of the dabber that is used for the clamping cylinder liner, consequently can accomplish the terminal surface of cylinder liner under a clamping and cut off and the excircle turning, simplifies process flow, reduces the process circulation. The utility model provides a cylinder liner machining equipment still is provided with and pushes away the material subassembly, cuts off at the cylinder liner and accomplishes the back, and the cylinder liner can be taken off via the arm of peripheral hardware, and the clout that cuts off of one end then can drop from the open end of dabber under the material pushing operation that pushes away the material subassembly, has consequently avoided production line automation to reform transform the in-process, and the tip cuts off the clout and interferes the problem of cylinder liner clamping in next duty cycle.

Drawings

FIG. 1 is a schematic view of a cylinder liner machining apparatus of the present application;

fig. 2 is a schematic view in cross section of the rotation of the expansion sleeve 11 of the present application.

1, a mandrel 2, a turning tool 3, a pushing assembly 4, a first guide rail 5, a second guide rail 6, a third guide rail W, a cylinder sleeve 11, an expansion sleeve 21, a first cutting knife 22, an external turning tool 23, a second cutting knife 31, a pushing guide rail 111, a core rod 112, an internal expansion block 113, an external expansion block 114, an expansion spring

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, wherein the dimensional ratios in the drawings do not represent actual dimensional ratios, and are only used for representing relative positional relationships and connection relationships between components, and the components with the same names or the same reference numbers represent similar or identical structures and are only used for illustrative purposes.

Fig. 1 is a schematic view of a cylinder liner machining apparatus provided in the present technical solution, in which a cylinder liner W is cut away, and only a half portion thereof is shown to clearly show a mandrel 1. The cylinder sleeve machining equipment comprises a mandrel 1 used for clamping a cylinder sleeve W and driving the cylinder sleeve W to coaxially rotate, and in order to clamp the cylinder sleeve W, the mandrel 1 is also provided with a variable outer diameter so as to reduce the outer diameter of the cylinder sleeve W in the process of putting in and taking off the cylinder sleeve W, so that the cylinder sleeve W can easily pass through the mandrel 1; when the cylinder sleeve W is clamped and driven to rotate, the outer diameter of the mandrel 1 is enlarged, and the mandrel 1 can coaxially expand the cylinder sleeve W from the inner circular surface of the cylinder sleeve W.

One end of the mandrel is connected with a machine head of the cylinder sleeve machining equipment, and the other end of the mandrel is in a suspended state. And the suspended end of the core shaft is defined as the open end of the core shaft 1, and the end connected with the machine head is a driving end. To achieve a variable outer diameter of the mandrel 1, in particular in the embodiments of the present application, it can be achieved using an expansion sleeve 11 as shown in fig. 2. Fig. 2 is a cross-sectional view of the expansion sleeve 11 rotated over the axis. The expansion sleeve 11 comprises a core rod 111 positioned on a central shaft, an inner expansion block 112 and an outer expansion block 113 which are oppositely matched with each other through a conical surface are arranged outside the core rod 111, the inner expansion block 112 and the outer expansion block 113 are respectively provided with at least two pieces around the circumferential direction of the core rod 111, in the application, the inner expansion block 112 and the outer expansion block 113 are respectively provided with three pieces, and an expansion spring 114 is embedded into the outer surface of the outer expansion block 113 along the circumferential direction. When diameter shrinkage is needed, the core rod 111 is stretched, the inner expansion block 112 and the outer expansion block 113 are relatively far away, and under the shrinkage of the expansion spring 114, the outer diameter of the expansion sleeve 11 is reduced; when diametrical expansion is desired, the inner mass 112 is relatively close to the inner mass 112 and the outer diameter is increased.

The cylinder sleeve machining equipment is also provided with a pushing assembly 3 which can move along the direction parallel to the axis of the mandrel 1 and can be used for pushing a turning material part comprising annular cutting tailings and a turned cylinder sleeve semi-finished product out of the expansion sleeve (11). Therefore, in the blanking process, the pushing assembly 3 moves towards the open end of the mandrel 1 in parallel with the axis, and the annular cutting tailing positioned on one side of the driving end of the mandrel 1 after the cylinder sleeve W is cut off is pushed to move to the open end of the mandrel 1 and fall off. Specifically, in the embodiment of the application, the pushing assembly 3 is arranged on the pushing guide rail 31 of the linear guide rail parallel to the axis of the mandrel 1, and in order to realize the pushing action of the pushing guide rail 31 on the cut-off tail material, a contact point exists between the pushing assembly 3 and the end surface of the annular cut-off tail material on the side of the driving end of the mandrel 1 after the cylinder sleeve W is cut off in the moving process of the pushing assembly 3 towards the open end of the mandrel 1. In this application, set up pushing equipment 3 into the annular that encircles expanding sleeve 11 to the whole week contact of realization and annular tailing of cutting off. In order to realize the above-described pushing function, in other embodiments, it is acceptable to provide the pushing member 3 in a rod shape having a single-point contact with the end surface of the ring-shaped cutting tail or in a fork shape having a multi-point contact. In the process that the cylinder sleeve machining equipment is used for automatic production, a semi-finished product of a cut cylinder sleeve W is taken down by the mechanical arm, the cut tailing on one side, close to the open end of the mandrel 1, of the cylinder sleeve W naturally drops in the process, and the annular cut tailing on the driving side can only be pushed to the open end of the mandrel 1 through the pushing assembly 3 and then drops. The cylinder liner W of the next round is then fed by the robot arm onto the mandrel 1 to start the next machining cycle.

The radial movement of the first cutting blade 21 parallel to the mandrel 1 is effected by means of a first guide rail 4 arranged parallel to the radial direction of the mandrel 1. The first cutting blade 21 is fixed to the first guide rail 4, normally away from the cylinder liner W to avoid its mounting and dismounting and the outer circular lathe, and during the cutting process, it is fed radially along the first guide rail 4 to cut the cylinder liner W at one end at a predetermined position. In a reasonably optimized scheme, as shown in fig. 1, a second cutting knife 23 is additionally arranged on the first guide rail 4, and the second cutting knife and the first guide rail are arranged at a certain distance, wherein the distance between the first cutting knife and the second cutting knife is equal to the expected length of the semi-finished product after the cylinder liner W is cut off, so that the two ends of the cylinder liner W are cut off simultaneously in the cutting process.

The cylindrical turning tool 22 is used for cylindrical turning of the cylinder liner W and is mounted on a second guide rail 5 arranged in the radial direction of the mandrel 1, so that feeding thereof is realized through the second guide rail 5, and the second guide rail 5 is simultaneously arranged on a third guide rail 6 parallel to the axial direction to realize axial advancing of the cylindrical turning tool 22. The external turning tool 22 finishes the external turning of the cylinder sleeve W along with the rotation of the cylinder sleeve W and the axial advance of the external turning tool 22. In the embodiment of the present application, at least two sets of cylindrical turning tools 22 are arranged side by side on the second guide rail 5 along an axial direction parallel to the mandrel 1. The distance between the cutting edge of each external turning tool 22 and the axis of the mandrel 1 is sequentially decreased progressively/increased progressively, and the decreased/increased difference is determined according to the processing feed amount of the external turning tool 22. So as to finish the rough machining and the finish machining of the excircle turning of the cylinder sleeve W at one time. For example, if the external turning of the cylinder liner W is completed by two steps of rough machining and one finish machining, and the finish machining allowance is 0.05mm, two sets of external turning tools 22 are installed, and the external turning tool 22 for the one finish machining is installed 0.05mm forward in the direction of the mandrel 1 compared to the external turning tool 22 for the rough machining. If the process requires multiple finish machining, the number of the external turning tools 22 is increased by adopting a similar method, and the distance between each external turning tool 22 and the axis of the expansion sleeve 11 is correspondingly adjusted.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims (6)

1. The cylinder sleeve machining equipment comprises a rotating mandrel (1) with a variable outer diameter and at least two groups of turning tools (2) arranged in parallel to the radial direction of the mandrel (1), wherein the distances between the turning tools (2) and the mandrel (1) are adjustable, and the cylinder sleeve machining equipment is characterized in that at least one group of turning tools (2) are cutting tools; the cylinder sleeve machining equipment further comprises a pushing assembly (3) moving in the axial direction parallel to the mandrel (1), and the pushing assembly (3) is used for pushing a turning material piece out of the open end of the mandrel.

2. A cylinder liner machining apparatus according to claim 1, characterized in that the turning tools (2) comprise a first cutting tool (21) arranged on a first guide rail (4) parallel to the radial direction of the mandrel (1), and an outer turning tool (22) arranged on a second guide rail (5) parallel to the radial direction of the mandrel (1), said second guide rail (5) being movable parallel to the axial direction of the mandrel (1).

3. The cylinder liner machining apparatus as claimed in claim 2, characterized in that a second cutting knife (23) is further provided on the first guide rail (4), and the first cutting knife (21) is spaced from the second cutting knife (23) by a distance corresponding to a cylinder liner length after the intended machining.

4. The cylinder liner machining apparatus according to claim 3, wherein at least two sets of outer turning tools (22) are provided on the second guide rail (5), and a difference between distances of the cutting edge of each outer turning tool (22) from the axis of the mandrel (1) is set to a predetermined turning feed amount.

5. A cylinder liner machining apparatus as claimed in claim 1, characterized in that the mandrel (1) is coaxially provided with an expansion sleeve (11).

6. The cylinder sleeve machining device according to any one of claims 1 to 5, wherein the pushing assembly (3) is arranged on a pushing guide rail (31) parallel to the axial direction of the mandrel (1), and the pushing assembly (3) is in contact with an end face on one side of the driving end of a cylinder sleeve (W) clamped on the mandrel (1) when moving.

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