Cylinder cover bottom surface deep hole processing machine tool

Abstract

The utility model discloses a cylinder cover bottom surface deep hole processing machine tool which comprises a machine tool base, a processing sliding rail, a drilling spindle box and a drilling cutter, a cylinder cover base is fixedly installed on the machine tool base, a cylinder cover supporting platform and a cylinder cover positioning vertical table are fixedly installed at the top end of the cylinder cover base, and a cutter guiding device penetrates through the cylinder cover positioning vertical table. A cylinder cover pressing device, a cylinder cover jacking device and a cylinder cover positioning pin column are further mounted on the cylinder cover positioning vertical table; the cylinder cover is supported on the cylinder cover supporting platform and inserted into a hole in the cylinder cover through the cylinder cover positioning vertical table and the cylinder cover positioning pin column, rapid positioning of drilling is achieved, meanwhile, clamping is completed through the cylinder cover pressing device and the cylinder cover jacking device, in the drilling process, the tool guiding device can prevent a drilling tool from swinging, and the drilling efficiency is improved. And the phenomena of cutter breakage and cutter flail are prevented, thin and deep hole machining of the cylinder cover can be completed at a time, feeding and positioning of the cylinder cover are fast and simple, the probability that the cylinder cover is collided and scratched is reduced, and the drilling efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cylinder head processing equipment, and in particular to a machine tool for deep hole processing on the bottom surface of a cylinder head. Background Technology

[0002] According to assembly requirements, the bottom surface of the cylinder head is generally machined with long and narrow deep holes, such as φ6mm and 110mm deep holes. The hole diameter is small and the drilling quality requirements are strict. Currently, vertical machining centers are mostly used to complete this task. Due to the depth and fineness of the holes, the drill bit is prone to breakage when drilling once using a vertical machining center. To reduce the probability of drill bit breakage, a pre-drilling guide is first used with an alloy drill bit, and then multiple drilling operations are performed to achieve the required depth. Therefore, the drilling process is cumbersome. In addition, during manual handling and loading, multiple adjustments are required to complete the positioning, fixing, and clamping of the workpiece, resulting in slow loading speed and poor clamping stability. This increases the probability of bumping and scratching the workpiece, ultimately leading to low quality and efficiency in deep hole machining, as well as serious waste of time and personnel. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a machine tool for machining deep holes on the bottom surface of cylinder heads that can be quickly loaded and positioned, firmly clamped, and can complete drilling in one go.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a deep hole machining machine for cylinder head bottom surface, including a machine tool base, a machining slide rail at the top of the machine tool base, a drilling spindle box slidably mounted on the machining slide rail, a drilling tool fixedly mounted on the power output end of the drilling spindle box, a cylinder head base fixedly mounted on the machine tool base on one side of the drilling tool, a cylinder head support platform and a cylinder head positioning stand fixedly mounted at the top of the cylinder head base, and the cylinder head positioning stand is located on the cylinder head base between the cylinder head support platform and the drilling spindle box, a tool guide device is provided through the cylinder head positioning stand, a cylinder head clamping device is also installed on the cylinder head positioning stand, a cylinder head tightening device and a cylinder head positioning pin are provided in cooperation with the cylinder head clamping device, and the cylinder head tightening device and the cylinder head positioning pin are respectively vertically arranged on the cylinder head positioning stand.

[0005] As a preferred technical solution, the cylinder head positioning stand is provided with two processing stations, and each processing station is respectively provided with the drilling tool, the tool guide device, the cylinder head clamping device and the cylinder head positioning pin, and at least two cylinder head positioning pins are provided on each processing station.

[0006] As a preferred technical solution, the tool guide device includes a tool guide sleeve that passes through the cylinder head positioning stand, and the tool guide sleeve is detachably installed on the cylinder head positioning stand by bolts.

[0007] As a preferred technical solution, the cylinder head clamping device includes two rotary cylinders, and the two rotary cylinders are located on both sides of the corresponding processing station.

[0008] As a preferred technical solution, the cylinder head tightening device includes a cylinder head tightening bolt threaded through the cylinder head positioning platform, and a cylinder head tightening block is connected to the end of the cylinder head tightening bolt.

[0009] As an improvement to the above technical solution, the cylinder head clamping block is configured as a cylinder, and the clamping end of the cylinder head clamping block forms a clamping and positioning cone surface with a gradually decreasing outer diameter.

[0010] Due to the adoption of the above technical solution, the cylinder head bottom deep hole machining machine tool includes a machine tool base. A machining slide rail is provided at the top of the machine tool base. A drilling spindle box is slidably mounted on the machining slide rail. A drilling tool is fixedly installed at the power output end of the drilling spindle box. A cylinder head base is fixedly installed on the machine tool base on one side of the drilling tool. A cylinder head support platform and a cylinder head positioning stand are fixedly installed at the top of the cylinder head base. The cylinder head positioning stand is located on the cylinder head base between the cylinder head support platform and the drilling spindle box. A tool guide device is provided through the cylinder head positioning stand. A cylinder head clamping device is also installed on the cylinder head positioning stand. A cylinder head top clamping device and a cylinder head positioning pin are provided in cooperation with the cylinder head clamping device. The cylinder head positioning pins are respectively vertically set on the cylinder head positioning stand; the present invention has the following beneficial effects: In use, the cylinder head is supported on the cylinder head support platform, and the cylinder head positioning stand and the cylinder head positioning pins are inserted into the holes on the cylinder head to achieve rapid positioning for drilling. At the same time, the cylinder head clamping device and the cylinder head top clamping device are used to complete the clamping. The drilling spindle box can be started to carry out drilling. During the drilling process, the tool guide device guides and supports the drilling tool to prevent it from swinging under high speed rotation and huge resistance. This helps to protect the drilling tool and prevent tool breakage and tool ejection. The fine and deep hole machining of the cylinder head can be completed in one go. During the drilling process, the cylinder head loading and positioning is fast and simple, and the clamping is firm, which helps to reduce the probability of collision and scratch on the cylinder head and improve drilling efficiency. Attached Figure Description

[0011] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0012] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0013] Figure 2 yes Figure 1 Enlarged structural diagram at point A;

[0014] Figure 3 This is a side view of an embodiment of the present utility model;

[0015] Figure 4 This is a schematic diagram of the usage state of an embodiment of this utility model;

[0016] In the diagram: 1-Machine tool base; 2-Machining slide rail; 3-Drilling spindle box; 4-Drilling tool; 5-Cylinder head base; 6-Cylinder head support platform; 7-Cylinder head positioning stand; 8-Cylinder head positioning pin; 9-Corner cylinder; 10-Cylinder head tightening bolt; 11-Cylinder head tightening block; 12-Tool guide sleeve; 13-Cylinder head. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Undoubtedly, those skilled in the art will recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, a deep hole machining machine for the bottom surface of a cylinder head is used to machine fine and deep holes on the bottom surface of the cylinder head 13. It includes a machine tool base 1, with a machining slide rail 2 at its top. A drilling spindle box 3 is slidably mounted on the machining slide rail 2. A drilling tool 4 is fixedly mounted on the power output end of the drilling spindle box 3. The drilling spindle box 3 is connected to a PLC electrical control system. Under the control of the PLC electrical control system, it automatically reciprocates along the machining slide rail 2, driving the drilling tool 4 to feed and retract, and controlling the drilling tool 4 to rotate during feeding to achieve the drilling of fine and deep holes. The above structure is well known to those skilled in the art and will not be described in detail here.

[0019] A cylinder head base 5 is fixedly installed on one side of the drilling tool 4 on the machine tool base 1. A cylinder head support platform 6 and a cylinder head positioning stand 7 are fixedly installed on the top of the cylinder head base 5. The cylinder head positioning stand 7 is located on the cylinder head base 5 between the cylinder head support platform 6 and the drilling spindle box 3. When drilling the cylinder head 13, the cylinder head 13 is supported on the cylinder head support platform 6 and one side abuts against the cylinder head positioning stand 7 to realize the vertical feeding of the cylinder head 13.

[0020] A cylinder head clamping device is also installed on the cylinder head positioning stand 7. A cylinder head tightening device and a cylinder head positioning pin 8 are provided in cooperation with the cylinder head clamping device. The cylinder head tightening device and the cylinder head positioning pin 8 are respectively vertically arranged on the cylinder head positioning stand 7. The cylinder head positioning pin 8 corresponds to the holes on the cylinder head 13. When the cylinder head 13 is vertically positioned, the cylinder head positioning pins 8 extend into the holes already formed on the cylinder head 13, realizing the machining positioning of the cylinder head 13. Through the cooperation of the cylinder head clamping device and the cylinder head tightening device, the cylinder head 13 is clamped and fixed, ensuring that the cylinder head 13 remains in a fixed state even after being subjected to impact force during drilling.

[0021] In this embodiment, the cylinder head positioning stand 7 is provided with two machining stations. Each machining station is respectively provided with the drilling tool 4, the cylinder head clamping device, and the cylinder head positioning pin 8, and at least two cylinder head positioning pins 8 are provided at each machining station. With the above configuration, the machining of two cylinder head 13 fine and deep holes can be completed at one time, improving the machining efficiency. Actual testing shows that the drilling of fine and deep holes on two cylinder heads 13 can be completed in 55 seconds, increasing the production speed by at least 100%.

[0022] exist Figure 1 To facilitate the display of other components, the cylinder head clamping device was not installed. Figure 3 Displays have been added, such as Figure 3 As shown, the cylinder head clamping device includes two corner cylinders 9, which are positioned on opposite sides of the corresponding processing station. Specifically, the two corner cylinders 9 at the same processing station are positioned on opposite sides of the cylinder head 13. The clamping effect on the cylinder head 13 is optimal when the two corner cylinders 9 are at opposite corners of the cylinder head 13. The cylinder head tightening device includes a cylinder head tightening bolt 10 threaded through the cylinder head positioning stand 7. A cylinder head tightening block 11 is connected to the end of the cylinder head tightening bolt 10, which tightens it on the other side of the cylinder head 13. This, in conjunction with the corner cylinders 9, clamps the cylinder head 13, making it more stable and secure after loading. The cylinder head clamping block 11 can be set as a cylinder, and the clamping end of the cylinder head clamping block 11 forms a clamping and positioning cone surface with a gradually decreasing outer diameter, so that the end of the cylinder head clamping block 11 is slightly smaller and can partially extend into the hole on the cylinder head 13, thereby clamping the cylinder head 13 while also playing a certain auxiliary positioning role.

[0023] A tool guide device is provided through the cylinder head positioning stand 7, and the tool guide device is correspondingly provided on each of the machining stations to guide and support the drilling tool 4. Specifically, the tool guide device includes a tool guide sleeve 12 that penetrates the cylinder head positioning stand 7, and the tool guide sleeve 12 is detachably installed on the cylinder head positioning stand 7 by bolts. After the drilling tool 4 retracts, its end is located inside the tool guide sleeve 12, which protects the end of the drilling tool 4 and also provides guidance for the next feed of the drilling tool 4. The tool guide sleeve 12 matches the drilling tool 4, so the tool guide sleeve 12 can be disassembled and replaced by operating the bolts to meet the needs of different models of drilling tools 4.

[0024] like Figure 4 As shown, during use, the two cylinder heads 13 are loaded onto the two machining stations. During loading, the cylinder head positioning pins 8 are first inserted into the corresponding holes on the cylinder head 13. Then, the corner cylinder 9 is activated to clamp the cylinder head. Finally, the cylinder head tightening bolts 10 are rotated to bring the cylinder head tightening block 11 into contact with the cylinder head 13. The cylinder head 13 is clamped and fixed in place by the corner cylinder 9. The drilling spindle box 3 is activated to drive the two drilling tools 4 to feed in. During the feeding process, the drilling tools 4 form a fine and deep hole on the cylinder head 13. Then, the drilling tools 4 retract. After drilling is completed, the corner cylinder 9 releases the pressure on the cylinder head 13, and it can be removed from the cylinder head support platform 6.

[0025] The description of this utility model is given for illustrative and descriptive purposes only, and is not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the utility model, and to enable those skilled in the art to understand the utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A machine tool for deep hole machining of cylinder head bottom surface, comprising a machine tool base, a machining slide rail at the top of the machine tool base, a drilling spindle box slidably mounted on the machining slide rail, and a drilling tool fixedly mounted on the power output end of the drilling spindle box, characterized in that: A cylinder head base is fixedly installed on one side of the drilling tool on the machine tool base. A cylinder head support platform and a cylinder head positioning stand are fixedly installed on the top of the cylinder head base. The cylinder head positioning stand is located on the cylinder head base between the cylinder head support platform and the drilling spindle box. A tool guide device is provided through the cylinder head positioning stand. A cylinder head clamping device is also installed on the cylinder head positioning stand. A cylinder head tightening device and a cylinder head positioning pin are provided in cooperation with the cylinder head clamping device. The cylinder head tightening device and the cylinder head positioning pin are respectively vertically arranged on the cylinder head positioning stand.

2. The cylinder head bottom surface deep hole machining machine tool as described in claim 1, characterized in that: The cylinder head positioning stand is provided with two processing stations. Each processing station is respectively provided with a drilling tool, a tool guide device, a cylinder head clamping device and a cylinder head positioning pin, and at least two cylinder head positioning pins are provided on each processing station.

3. The cylinder head bottom surface deep hole machining machine tool as described in claim 2, characterized in that: The tool guide device includes a tool guide sleeve that passes through the cylinder head positioning stand, and the tool guide sleeve is detachably installed on the cylinder head positioning stand by bolts.

4. The cylinder head bottom surface deep hole machining machine tool as described in claim 2, characterized in that: The cylinder head clamping device includes two corner cylinders, and the two corner cylinders are located on both sides of the corresponding processing station.

5. The deep hole machining machine tool for the bottom surface of the cylinder head as described in claim 2, characterized in that: The cylinder head tightening device includes a cylinder head tightening bolt threaded through the cylinder head positioning platform, and a cylinder head tightening block is connected to the end of the cylinder head tightening bolt.

6. The cylinder head bottom surface deep hole machining machine tool as described in claim 5, characterized in that: The cylinder head clamping block is cylindrical, and the clamping end of the cylinder head clamping block has a clamping and positioning cone surface with a gradually decreasing outer diameter.

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