Pressing assembly for cylinder head machining

Abstract

The utility model provides a pressing assembly for cylinder head machining. The pressing assembly comprises a bottom plate and a pressing plate, the lifting air cylinder is fixedly connected to the bottom plate; one end of the overturning block is hinged to an air cylinder rod of the lifting air cylinder, a transverse plate is fixed to the other end of the overturning block, the overturning block is further provided with a liquid inlet hole and a liquid outlet hole, the liquid inlet hole and the liquid outlet hole are communicated through a channel, and the liquid outlet hole is located in the middle area of the front face of the overturning block; the hinge seat is also fixedly connected to the bottom plate and located in front of the lifting air cylinder, a connecting rod is hinged to the hinge seat, and the top of the connecting rod is hinged to the overturning block; and the two pressing structures comprise pressing heads, the two pressing heads are connected to the two ends of the transverse plate in a floating mode, and the lower surfaces of the pressing heads are curved surfaces. According to the pressing assembly, two points of the upper end face of the cylinder head can be pressed, the pressing effect is good, high adaptability to workpieces with uneven upper end faces is achieved, stable pressing of the cylinder head is achieved, and the machining quality and stability of the cylinder head are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder head machining, in particular to a clamping assembly for cylinder head machining. Background Art

[0002] In the process of mechanical processing, boring the cylinder head and other workpieces is one of the common process steps. When boring, the upper end surface needs to be clamped to ensure the stability and accuracy of the processing process. The commonly used clamping method is to clamp the workpiece through a lever cylinder. However, this method has the following problems:

[0003] 1. In order to ensure the stability of processing, generally at least two lever cylinders are required, which are positioned on both sides of the cylinder bore, and the maintenance and purchase costs will increase;

[0004] 2. Since the clamping of the lever cylinder is a rigid contact, when the upper end surface is uneven, it will cause a deeper indentation, which seriously affects the processing quality and stability. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a clamping assembly for cylinder head machining, which can clamp two points on the upper end surface of the cylinder head with good clamping effect and has high adaptability to workpieces with uneven upper end surfaces.

[0006] To achieve the above purpose, the utility model adopts the following technical solution: a clamping assembly for cylinder head machining, comprising:

[0007] a bottom plate;

[0008] A lifting cylinder, the lifting cylinder is fixedly connected to the bottom plate;

[0009] A flip block, one end of which is hingedly connected to the cylinder rod of the lifting cylinder, and the other end of which is fixed with a horizontal plate. The flip block also has a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are connected through a channel, and the liquid outlet is located in the middle area of ​​the front side of the flip block;

[0010] An articulated seat, which is also fixedly connected to the bottom plate and is located in front of the lifting cylinder, a connecting rod is hinged on the articulated seat, and the top of the connecting rod is hinged to the flip block;

[0011] Two clamping structures, the clamping structures include clamping heads, the two clamping heads are floatingly connected to the two ends of the transverse plate, and the lower surface of the clamping heads is a curved surface.

[0012] Furthermore, a first hinge groove is formed at the tail of the flip block, and is hinged to the cylinder rod of the lifting cylinder through a first hinge shaft.

[0013] Furthermore, a second hinge groove is provided at the front of the flip block, and is hinged to the connecting rod on the hinge seat via a second hinge shaft.

[0014] Furthermore, the hinge seat includes a hinge tube, a side of the hinge tube is provided with a clearance groove, and the lower end of the connecting rod is hingedly connected in the hinge tube.

[0015] Furthermore, the liquid inlet hole is located at the back of the flip block and is connected to a coolant pipeline via a pipe joint.

[0016] Furthermore, the front portion of the flip block has a bent portion that bends downward.

[0017] Furthermore, the two ends of the horizontal plate have an outer protrusion, a step hole is provided in the outer protrusion, a connecting rod is fixed to the upper surface of the clamping head, the top of the connecting rod is clamped in the step hole through a clamping plate, and a disc spring is provided on the outer sleeve of the connecting rod.

[0018] Furthermore, the top of the lifting cylinder is also provided with a cover plate, the cover plate is supported by support legs, and the lifting cylinder is located between the support legs.

[0019] Furthermore, the lower surface of the pressing head is an arc-shaped surface.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. The clamping assembly can clamp two points on the upper end surface of the cylinder head with good clamping effect. It also has high adaptability to workpieces with uneven upper end surfaces, realizes stable clamping of the cylinder head, and effectively improves the quality and stability of cylinder head processing;

[0022] 2. The coolant pipeline is set so that the outlet can face the processing tool directly, and the liquid outflow speed is stable, which can effectively reduce the temperature during the processing, extend the tool life, and improve the processing quality and speed;

[0023] 3. The setting of the cover plate on the top of the lifting cylinder and the support by the support legs can prevent the coolant or iron filings from splashing directly onto the top area of ​​the lifting cylinder, effectively extending the service life of the lifting cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 It is a connection diagram of the turning block and the pressing structure of the utility model;

[0026] Figure 3 This is a simplified structural diagram of the utility model in the clamping cylinder head;

[0027] In the figure: 1, bottom plate; 2, lifting cylinder; 3, turning block; 4, horizontal plate; 5, liquid outlet; 6, hinge seat; 7, pressing head; 8, first hinge groove; 9, second hinge groove; 10, connecting rod; 11, cover plate; 12, hinge cylinder; 13, clearance groove; 14, coolant pipeline; 15, bending part; 16, outer convex block; 17, connecting rod; 18, disc spring; 19, supporting leg; 20, channel; 21, cylinder head; DETAILED DESCRIPTION

[0028] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0029] like Figure 1-3 As shown, the embodiment of the utility model provides a clamping assembly for machining a cylinder head 21, comprising:

[0030] A bottom plate 1;

[0031] A lifting cylinder 2, wherein the lifting cylinder 2 is fixedly connected to the base plate 1;

[0032] A flip block 3, one end of which is hingedly connected to the cylinder rod of the lifting cylinder 2, and the other end of which is fixed with a horizontal plate 4. The flip block 3 also has a liquid inlet and a liquid outlet 5, and the liquid inlet and the liquid outlet 5 are connected through a channel 20. The liquid outlet 5 is located in the middle area of ​​the front side of the flip block 3;

[0033] An articulated seat 6, which is also fixedly connected to the bottom plate 1 and is located in front of the lifting cylinder 2, and a connecting rod 10 is hinged on the articulated seat 6, and the top of the connecting rod 10 is hinged to the flip block 3;

[0034] Two clamping structures, the clamping structure includes a clamping head 7, the two clamping heads 7 are floatingly connected to the two ends of the transverse plate 4, and the lower surface of the clamping head 7 is a curved surface.

[0035] The process of the utility model during use is as follows: when the cylinder head 21 on the workbench needs to be positioned, the lifting cylinder 2 is started, and the cylinder rod of the lifting cylinder 2 extends upward. Since the flip block 3 is hinged to the connecting rod 10 at the same time, the cylinder rod will drive the flip block 3 to flip. When flipping, the clamping structure thereon will drive the clamping head 7 to clamp downward. Since the clamping head 7 is floatingly connected to the two ends of the cross plate 4, when the upper end surface of the cylinder head 21 is uneven, the clamping head 7 can float to ensure that it will not damage the upper surface of the cylinder head 21. At the same time, since there are two clamping structures on the cross plate 4, the cylinder head 21 can be clamped at one time, and only one lifting cylinder 2 is needed. After the cylinder head 21 is clamped, the cylinder liner hole of the cylinder head 21 can be bored or honed. When the above process is performed, since the liquid inlet and outlet holes 5 are provided on the flip block 3, and the liquid outlet hole 5 is located in the middle of the front of the flip block 3, the coolant can directly act on the tool, and the cooling effect is better. In addition, since the lower surface of the clamping head 7 is set as a curved surface, specifically, as an arc surface, the contact area between the clamping head 7 and the cylinder head 21 can be reduced, thereby reducing the probability of contact with uneven areas.

[0036] Furthermore, the rear portion of the flip block 3 is provided with a first hinge groove 8, and is hinged to the cylinder rod of the lifting cylinder 2 through a first hinge shaft. Specifically, the rear portion of the flip block 3 of the utility model is hinged to the cylinder rod of the lifting cylinder 2 through the first hinge groove 8, and the front portion of the flip block 3 is hinged to the hinge seat 6 through the second hinge groove 9, so that the flip block 3 can be flipped when the lifting cylinder 2 is lifted.

[0037] Furthermore, the hinge seat 6 includes a hinge tube 12, and a clearance groove 13 is provided on the side of the hinge tube 12, and the lower end of the connecting rod 10 is hingedly connected in the hinge tube 12. Through the provision of the clearance groove 13, the connecting rod 10 will not be blocked by the hinge tube 12 when swinging.

[0038] Further, the liquid inlet is located at the back of the flip block 3 and is connected to the coolant pipeline 14 through a pipe joint. Since the liquid inlet is located at the back of the flip block 3 and is connected to the coolant pipeline 14 through a pipe joint, the coolant can flow directly into the flip block 3.

[0039] Furthermore, the front part of the flip block 3 has a downwardly bent portion 15. The arrangement of the bent portion 15 can make the flip block 3 more stable during compression.

[0040] Furthermore, the two ends of the horizontal plate 4 have an outer protrusion 16, a step hole is provided in the outer protrusion 16, a connecting rod 17 is fixed to the upper surface of the clamping head 7, the top of the connecting rod 17 is clamped in the step hole through a clamping plate, and a disc spring 18 is provided on the outer sleeve of the connecting rod 17. Specifically, through the provision of the outer protrusion 16, when the cylinder head 21 is clamped, the horizontal plate 4 will not interfere with the tool, and through the provision of the disc spring 18, if the clamping parts of the two clamping heads 7 are not on the same plane, the cylinder head 21 can be clamped by the floating of the disc spring 18, and the surface of the cylinder head 21 will not be damaged.

[0041] Furthermore, the top of the lifting cylinder 2 is also provided with a cover plate 11, and the cover plate 11 is supported by support legs 19, and the lifting cylinder 2 is located between the support legs 19. The cover plate 11 provided on the top of the lifting cylinder 2 can play a blocking role, preventing coolant or iron filings from directly splashing onto the top of the lifting cylinder 2, thereby increasing its service life.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A clamping assembly for cylinder head machining, characterized in that: include: a bottom plate; A lifting cylinder, the lifting cylinder is fixedly connected to the bottom plate; A flip block, one end of which is hingedly connected to the cylinder rod of the lifting cylinder, and the other end of which is fixed with a horizontal plate. The flip block also has a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are connected through a channel, and the liquid outlet is located in the middle area of ​​the front side of the flip block; An articulated seat, which is also fixedly connected to the bottom plate and is located in front of the lifting cylinder, a connecting rod is hinged on the articulated seat, and the top of the connecting rod is hinged to the flip block; Two clamping structures, the clamping structures include clamping heads, the two clamping heads are floatingly connected to the two ends of the transverse plate, and the lower surface of the clamping heads is a curved surface.

2. A clamping assembly for cylinder head machining according to claim 1, characterized in that: The tail of the flip block is provided with a first hinge groove, and is hinged to the cylinder rod of the lifting cylinder through a first hinge shaft.

3. A clamping assembly for cylinder head machining according to claim 2, characterized in that: The front part of the flip block is provided with a second hinge groove, and is hinged to the connecting rod on the hinge seat through a second hinge shaft.

4. A clamping assembly for cylinder head machining according to claim 3, characterized in that: The hinge seat comprises a hinge tube, a side surface of the hinge tube is provided with a clearance groove, and the lower end of the connecting rod is hingedly connected in the hinge tube.

5. A clamping assembly for cylinder head machining according to claim 4, characterized in that: The liquid inlet hole is located at the back of the flip block and is connected to a coolant pipeline through a pipe joint.

6. A clamping assembly for cylinder head machining according to claim 5, characterized in that: The front portion of the turning block has a bent portion bent downward.

7. A clamping assembly for cylinder head machining according to claim 6, characterized in that: The two ends of the horizontal plate are provided with an outer protrusion, a step hole is provided in the outer protrusion, a connecting rod is fixed to the upper surface of the clamping head, the top of the connecting rod is clamped in the step hole through a clamping disk, and a disc spring is provided on the outer sleeve of the connecting rod.

8. A clamping assembly for cylinder head machining according to claim 7, characterized in that: The top of the lifting cylinder is also provided with a cover plate, and the cover plate is supported by supporting legs, and the lifting cylinder is located between the supporting legs.

9. A clamping assembly for cylinder head machining according to claim 8, characterized in that: The lower surface of the pressing head is an arc-shaped surface.

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