Rapid remodeling device of crankshaft grinding machine and crankshaft grinding machine

Abstract

The utility model provides a rapid remodeling device of a crankshaft grinding machine and the crankshaft grinding machine. The rapid remodeling device of the crankshaft grinding machine comprises a sliding plate and a tailstock arranged on the sliding plate in a sliding mode. A fixing plate is arranged on the sliding plate, a hydraulic cylinder is arranged between the tailstock and the fixing plate, the hydraulic cylinder is connected with a hydraulic system, and the hydraulic system is provided with an electro-hydraulic servo valve. The rapid remodeling device of the crankshaft grinding machine and the grinding machine have the advantages of being stable in operation, high in remodeling precision and high in remodeling speed, and can meet the production trend of low cost and high flexibility.

Description

Technical Field

[0001] The utility model relates to a crankshaft processing device, in particular to a crankshaft grinder quick-change device and the crankshaft grinder. Background Art

[0002] At present, the crankshaft grinder in the industry needs to manually loosen the tailstock locking device to change the model, and move the tailstock axially to adapt to the production of crankshafts of different lengths using the same fixture. The main defects of the above equipment are:

[0003] 1) If the same fixture is not changed, only crankshafts of the same series length can be produced, which does not meet the production trend of low cost and high flexibility;

[0004] 2) If crankshafts of different lengths are produced, the tailstock position needs to be moved manually, which is cumbersome to operate;

[0005] 3) Manual mold changing has low mold changing accuracy and cannot effectively quantify the axial distance, which easily leads to quality problems such as workpiece processing runout and roundness deviation.

[0006] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0007] The utility model aims to provide a quick mold changing device for a crankshaft grinder, which has the advantages of stable operation, high mold changing accuracy and fast mold changing speed, and can meet the production trend of low cost and high flexibility.

[0008] Another object of the present invention is to provide a crankshaft grinder, including the above-mentioned rapid mold-changing device, which has the advantages of stable operation, high mold-changing accuracy and fast mold-changing speed, and can meet the production trend of low cost and high flexibility.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A quick-change device for a crankshaft grinder comprises a slide plate and a tailstock slidably arranged on the slide plate; a fixed plate is arranged on the slide plate, a hydraulic cylinder is arranged between the tailstock and the fixed plate, the hydraulic cylinder is connected to a hydraulic system, and the hydraulic system is provided with an electro-hydraulic servo valve.

[0011] According to one embodiment of the utility model, a positioning device is provided between the tail frame and the slide plate.

[0012] According to an embodiment of the present utility model, the positioning device is a positioning bolt, which is arranged at the bottom of the tail frame, and the end of the positioning bolt abuts against the slide plate.

[0013] According to an embodiment of the utility model, a bottom plate is extended to both sides of the bottom of the tail frame, and the positioning bolts are arranged on the bottom plate.

[0014] According to an embodiment of the utility model, a positioning cylinder is further provided on the tail frame, and the end of the piston rod of the positioning cylinder abuts against the slide plate.

[0015] According to one embodiment of the utility model, a displacement sensor is provided on the hydraulic cylinder.

[0016] According to one embodiment of the utility model, the hydraulic system includes an oil tank, an oil pump and an oil pipe, and the electro-hydraulic servo valve is connected to the oil pipe.

[0017] According to an embodiment of the present utility model, the crankshaft grinder quick mold changing device further includes an automatic control system connected to the hydraulic system.

[0018] According to one embodiment of the present utility model, the automatic control system includes a human-machine interface.

[0019] The utility model also provides a crankshaft grinder, comprising the above-mentioned crankshaft grinder quick mold changing device.

[0020] Compared with the prior art, the advantages and beneficial effects of the embodiments of the present invention are:

[0021] 1) Stable operation: The crankshaft grinder quick-change device provided by the embodiment of the utility model uses a hydraulic cylinder to control the tailstock position, has stable operation, and can improve the workpiece processing quality;

[0022] 2) High changeover accuracy: The crankshaft grinder quick changeover device provided by the embodiment of the utility model has a newly added electro-hydraulic servo valve in the hydraulic system. The electro-hydraulic servo valve has the advantages of fast dynamic response, high control accuracy, long service life, etc., and can accurately control the position of the tailstock;

[0023] 3) Fast mold changing speed: The crankshaft grinder fast mold changing device provided by the embodiment of the utility model is provided with an automatic control system with a human-machine interface. By selecting the program of the machine model on the machine tool panel, the tailstock can automatically move to the corresponding position to meet the demand for fast mold changing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0025] Figure 1 A schematic structural diagram of a quick mold changing device for a crankshaft grinder provided in an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1. Slide plate; 2. Tail frame; 21. Bottom plate; 3. Fixed plate; 4. Hydraulic cylinder; 41. Piston rod; 42. Oil pipe; 5. Electro-hydraulic servo valve; 6. Positioning bolt. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0029] In the description of the present invention, "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. The directions or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense, for example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] like Figure 1 As shown, an embodiment of the utility model provides a quick mold changing device for a crankshaft grinder, comprising a slide plate 1 and a tailstock 2 slidably arranged on the slide plate 1. A fixed plate 3 is arranged on the slide plate 1, and a hydraulic cylinder 4 is arranged between the tailstock 2 and the fixed plate 3. For example, the hydraulic cylinder 4 is fixedly arranged on the tailstock 2, and the end of the piston rod 41 of the hydraulic cylinder 4 is fixedly connected to the side of the fixed plate 3. The piston rod 41 of the hydraulic cylinder 4 can be extended and retracted to drive the tailstock 2 to move on the slide plate 1 to perform a mold changing operation. The hydraulic cylinder 4 is connected to a hydraulic system, and the hydraulic system is provided with an electro-hydraulic servo valve 5. Specifically, the hydraulic system includes an oil tank, an oil pump and an oil pipe 42, and the electro-hydraulic servo valve 5 is connected to the oil pipe 42.

[0031] Compared with the existing crankshaft grinder mold changing structure, the crankshaft grinder quick mold changing device provided by the embodiment of the utility model adds a hydraulic cylinder 4 connected to the tailstock 2 to drive the tailstock 2 to change molds. It is easy to operate, has high mold changing accuracy, fast mold changing speed, and stable operation, so that the crankshaft grinder can use the same fixture to produce crankshafts of different lengths and series, meeting the low-cost and high-flexibility production trend; in addition, the crankshaft grinder quick mold changing device provided by the embodiment of the utility model also adds an electro-hydraulic servo valve 5 to the hydraulic system to output modulated flow and pressure, which has the advantages of fast dynamic response, high control accuracy, and long service life, so that the hydraulic cylinder 4 can accurately reach the corresponding position, so that the mold changing accuracy of the crankshaft grinder is further improved, and high-precision mold changing is achieved. The axial distance can be effectively quantified, and quality problems such as processing jump and roundness deviation caused by the mold changing accuracy of the workpiece can be solved, thereby improving the equipment processing yield rate.

[0032] In order to fix the position of the tailstock 2 after the change of shape, a positioning device is provided between the tailstock 2 and the slide 1. In one embodiment of the utility model, Figure 1 As shown, the positioning device is a positioning bolt 6, which is arranged at the bottom of the tail frame 2. The end of the positioning bolt 6 abuts against the slide 1 to provide friction to keep the tail frame 2 and the slide 1 in a fixed position. Specifically, in order to improve the positioning effect and prevent the tail frame 2 from being displaced after the change, a bottom plate 21 is extended to both sides of the bottom of the tail frame 2, and the positioning bolt 6 is arranged on the bottom plate 21, that is, positioning bolts 6 are arranged on both sides of the moving direction of the tail frame 2 to improve the positioning effect. In other embodiments, a positioning cylinder can also be set on the tail frame 2, and the piston rod of the positioning cylinder abuts against the slide 1 for positioning, and cooperates with the positioning bolt 6 to further improve the positioning effect.

[0033] In one embodiment of the utility model, the hydraulic cylinder 4 is arranged on the tailstock 2, and the end of the piston rod 41 of the hydraulic cylinder 4 is fixedly connected to the side of the fixed plate 3, so the hydraulic cylinder 4 moves synchronously with the tailstock 2. The hydraulic cylinder 4 is provided with a displacement sensor, which can accurately calculate the displacement distance of the tailstock 2, further improving the changeover accuracy.

[0034] In one embodiment of the utility model, the crankshaft grinder quick mold changing device also includes an automatic control system connected to the hydraulic system. In this embodiment, a new automatic control system is added, which is connected to the electro-hydraulic servo valve 5, oil pump and other components of the hydraulic system. Through the control of the automatic control system, the tailstock can automatically run to the position of the corresponding model, without manual mold change, only program switching, and the fixture automatically adjusts the support position. Preferably, the automatic control system includes a human-machine interface (HMI) to facilitate the operator to operate and perform one-key mold change.

[0035] When the crankshaft grinder quick mold changing device provided in the embodiment of the utility model is used, the steps are as follows:

[0036] 1) The electro-hydraulic servo valve 5 is connected to the hydraulic system. The displacement of the valve core is proportional to the input current of the torque motor. If the input current is reversed, the flow is also reversed to control the extension and contraction of the piston rod 41 of the hydraulic cylinder 4, thereby adjusting the position of the tailstock 2;

[0037] 2) When changing the type, loosen the positioning bolt 6 on the tailstock 2, wherein the hydraulic cylinder 4 is connected to the tailstock 2, and the action of the hydraulic cylinder 4 is controlled by the electro-hydraulic servo valve 5 to drive the tailstock 2 to move to the appropriate position;

[0038] 3) One-touch operation on the HMI interface to change models. Select the model program on the machine panel, and the tailstock 2 will automatically move to the corresponding position to meet the needs of fast model change.

[0039] The utility model also provides a crankshaft grinder, comprising the above-mentioned crankshaft grinder quick mold changing device, and thus has the advantages of the above-mentioned crankshaft grinder quick mold changing device:

[0040] 1) Smooth operation improves the stability of crankshaft grinder operation and ensures production capacity output;

[0041] 2) Accurate changeover reduces the scrapping of workpieces caused by inaccurate tailstock position;

[0042] 3) Fast changeover speed and easy use, which can save tailstock adjustment time and improve changeover efficiency;

[0043] 4) Simple operation, reducing unnecessary movements of workers when changing models, and improving ergonomics.

[0044] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A quick changeover device for a crankshaft grinder, characterized in that: The invention comprises a slide plate (1) and a tail frame (2) slidably arranged on the slide plate (1); a fixed plate (3) is arranged on the slide plate (1); a hydraulic cylinder (4) is arranged between the tail frame (2) and the fixed plate (3); the hydraulic cylinder (4) is connected to a hydraulic system; and the hydraulic system is provided with an electro-hydraulic servo valve (5).

2. The crankshaft grinder quick changeover device according to claim 1, characterized in that: A positioning device is provided between the tail frame (2) and the slide plate (1).

3. The crankshaft grinder quick changeover device according to claim 2, characterized in that: The positioning device is a positioning bolt (6) which is arranged at the bottom of the tail frame (2), and the end of the positioning bolt (6) abuts against the slide plate (1).

4. The crankshaft grinder quick changeover device according to claim 3, characterized in that: A bottom plate (21) is provided at both sides of the bottom of the tail frame (2), and the positioning bolts (6) are arranged on the bottom plate (21).

5. The crankshaft grinder quick changeover device according to claim 3 or 4, characterized in that: The tail frame (2) is also provided with a positioning cylinder, and the end of the piston rod of the positioning cylinder abuts against the slide plate (1).

6. The crankshaft grinder quick changeover device according to claim 1, characterized in that: The hydraulic cylinder (4) is provided with a displacement sensor.

7. The crankshaft grinder quick changeover device according to claim 1, characterized in that: The hydraulic system comprises an oil tank, an oil pump and an oil pipe (42), and the electro-hydraulic servo valve (5) is connected to the oil pipe (42).

8. The crankshaft grinder quick changeover device according to claim 1, characterized in that: It also includes an automatic control system connected to the hydraulic system.

9. The crankshaft grinder quick changeover device according to claim 8, characterized in that: The automatic control system includes a human-machine interface.

10. A crankshaft grinding machine, characterized in that: It comprises a crankshaft grinder quick-change device according to any one of claims 1 to 8.

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