Large cylinder cover end face horizontal milling tool

Abstract

The utility model discloses a horizontal milling tool for the end face of a large cylinder cover, which belongs to the field of processing tools and comprises an indexing turntable, a tool body and a lifting mechanism, the indexing turntable is used for driving the tool body to rotate by 180 degrees so as to process the two end faces of the cylinder cover, and the lifting mechanism comprises a lifting bracket arranged on the tool body in a liftable manner. The lifting bracket is provided with a roller slide way facilitating labor-saving pushing of the cylinder cover, a first baffle is arranged at one end of the lifting bracket in a swinging mode, a second baffle is arranged at the other end of the lifting bracket in a swinging mode, and the first baffle or the second baffle can automatically swing along with the lifting action of the lifting bracket when getting close to a machining position. And the milling of the end surface of the cylinder cover is not influenced during processing, so that the method has good applicability.

Description

Technical Field

[0001] The utility model relates to the field of processing tools, in particular to a horizontal milling tool for the end face of a large cylinder head. Background Art

[0002] The cylinder head is an important part of the fuel engine. Its processing procedures include not only the processing of various cavities, but also the fine milling of the front and rear end faces. For the processing of large cylinder heads with heavy weight, the applicant proposed a cylinder head deep hole drilling tool and deep hole drilling processing device (application number CN202022589711.0) on November 10, 2020. The tool is provided with a liftable support plate, and a slide composed of many rollers is provided on the support plate. The slide can be used to push the cylinder head to the top of the clamping position with less effort. A baffle is provided at one end of the tool, and the baffle is used to abut against the cylinder head so that the locating holes on the cylinder head correspond to the locating pins on the tooling up and down, so that the cylinder head can accurately fall into the clamping position after falling.

[0003] However, this tool is not suitable for cylinder head end face processing because the baffle fixed on the tool will block the cylinder head end face and interfere with the milling path of the milling cutter. In addition, the tool can only process one end of the cylinder head, and the cylinder head needs to be transferred to another tool to process the other end, which increases the number of clamping times. Therefore, this tool needs further improvement. Utility Model Content

[0004] In view of the above technical problems, the utility model proposes a large cylinder head end face horizontal milling tool based on previous research and development, which can be used for processing large cylinder head end faces while retaining the advantages of the original tooling.

[0005] In order to solve the above technical problems, the technical solutions adopted by the utility model are as follows:

[0006] A large cylinder head end face horizontal milling tool, comprising a tool body, the tool body is provided with a lifting mechanism, the lifting mechanism comprises

[0007] A lifting cylinder is vertically arranged on the top of the tooling body;

[0008] A lifting bracket is horizontally fixedly mounted on the piston rod of the lifting cylinder;

[0009] One end of the lifting bracket is fixedly connected to a first fixed shaft, a first rotating sleeve is rotatably sleeved on the first fixed shaft, a first baffle is fixedly connected to the first rotating sleeve, and a first crank handle is fixedly connected to the other side;

[0010] A first anchor is provided on the tool body below the first rotating sleeve, a first connecting rod is hinged on the first anchor, the first connecting rod is hinged to the first rocker, and the first anchor is vertically limited when approaching the processing position.

[0011] As a preferred technical solution, a dividing turntable is installed at the bottom of the tooling body.

[0012] As a preferred technical solution, the first anchor is elastically slidably connected to the tool body in a vertical direction, and the first anchor has a tendency to slide upward;

[0013] A first boss is provided on the top of the first anchor member corresponding to the bottom surface of the lifting bracket, and a first slot is provided on the lower end of the first anchor member;

[0014] A clamping plate is fixedly connected to one side of the indexing turntable close to the processing position. When the first anchor member is close to the processing position, the clamping plate slides into the first clamping groove.

[0015] As a preferred technical solution, a first spring is provided between the first anchor and the tool body, and the first spring generates an upward elastic force on the first anchor.

[0016] As a preferred technical solution, the other end of the lifting bracket is fixedly connected to a second fixed shaft, a second rotating sleeve is rotatably sleeved on the second fixed shaft, a second baffle is fixedly connected to one side of the second rotating sleeve, and second crank handles are fixedly connected to the other two sides;

[0017] A second anchor is elastically slidably connected to the tool body at a position below the second rotating sleeve in a vertical direction, and the second anchor has a tendency to slide upward;

[0018] A second connecting rod is hinged on the second anchor member, the second connecting rod is hinged to the second rocker, a second boss is provided on the top of the second anchor member corresponding to the bottom surface of the lifting bracket, and a second slot is provided at the lower end of the second anchor member;

[0019] When the second anchor member is close to the processing position, the clamping plate slides into the second clamping groove.

[0020] As a preferred technical solution, a second spring is provided between the second anchor and the tool body, and the second spring generates an upward elastic force on the second anchor.

[0021] As a preferred technical solution, a roller slide is provided on the lifting bracket along a horizontal straight line direction, and guide plates are fixedly connected to both sides of the roller slide on the lifting bracket.

[0022] As a preferred technical solution, a sliding guide rod is vertically fixedly connected to the bottom of the lifting bracket, and the sliding guide rod is slidably connected to the tooling body.

[0023] As a preferred technical solution, the top of the tool body is provided with

[0024] A number of support nails, used to support the bottom surface of the cylinder head;

[0025] A plurality of positioning pins for defining the horizontal position of the cylinder head;

[0026] A plurality of hydraulic clamps are used to press the cylinder head onto the top of the tooling body.

[0027] As a preferred technical solution, the plurality of support pins include air inspection support pins.

[0028] The utility model adopts the above technical solution, and has the following advantages compared with the prior art:

[0029] 1. By setting a dividing turntable at the bottom of the tooling body, the tooling body can be rotated 180°, and both end surfaces of the cylinder head can be processed in one clamping, which is convenient and efficient.

[0030] 2. The first baffle or the second baffle swingably arranged on the lifting bracket can not only swing upward to a position higher than the roller slide when it is close to the processing position and the lifting bracket is raised, so as to abut against the cylinder head and provide a pre-positioning effect for the cylinder head, but also when the lifting bracket is lowered and the cylinder head is clamped in place, it can be stored in a position lower than the roller slide to avoid interfering with the milling of the milling cutter. Compared with the original tooling, it has better applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a horizontal milling tool for the end face of a large cylinder head in the utility model;

[0032] Figure 2 for Figure 1 Bottom view of a large cylinder head end face horizontal milling tool;

[0033] Figure 3 for Figure 1 A schematic diagram of the structure of the tooling body and the structure above it;

[0034] Figure 4 for Figure 1 Structural diagram of the lifting mechanism;

[0035] Figure 5 for Figure 4 Exploded view of the lifting mechanism;

[0036] Figure 6 for Figure 4One end view of the lifting mechanism;

[0037] Figure 7 for Figure 4 Another end view of the lifting mechanism;

[0038] Figure 8 The utility model is a use effect diagram of a large cylinder head end face horizontal milling tool.

[0039] In the figure,

[0040] 10-indexing turntable; 11-clamping plate; 20-tool body; 21-support nail; 22-locating pin; 23-hydraulic clamp; 30-lifting mechanism; 31-lifting cylinder; 32-lifting bracket; 321-roller slide; 322-sliding guide rod; 323-guide plate; 324-first fixed shaft; 325-second fixed shaft; 33-first rotating sleeve; 331-first baffle; 332-first crank; 34-first anchor; 341-first connecting rod; 342-first boss; 343-first slot; 35-first spring; 36-second rotating sleeve; 361-second baffle; 362-second crank; 37-second anchor; 371-second connecting rod; 372-second boss; 373-second slot; 38-second spring; 40-cylinder head; 50-milling cutter. DETAILED DESCRIPTION

[0041] The specific implementation methods of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0042] like Figure 1-Figure 8As shown, a large cylinder head end face horizontal milling tool comprises an indexing turntable 10, a tool body 20 and a lifting mechanism 30. The indexing turntable 10 is used to be installed on a horizontal milling machine (the horizontal milling machine is not shown in the figure). The indexing turntable 10 is located on one side of a milling cutter 50 on the horizontal milling machine. The position of the milling cutter 50 is a processing position. The tool body 20 is installed on the indexing turntable 10. The indexing turntable 10 can be used to drive the tool body 20 to rotate a required angle. The tool body 20 is used to fix the cylinder head 40 to be processed. Specifically, a plurality of support pins 21, a plurality of positioning pins 22 and a plurality of hydraulic clamps 23 are provided on the top of the tool body 20. The support pins 21 are used to support the cylinder head 40. The bottom surface of the cylinder head 40 is formed by a plurality of support nails 21, and the top surfaces of the plurality of support nails 21 are of the same height so that the bottom surface of the cylinder head 40 is horizontal. The plurality of support nails 21 include at least two air inspection support nails for checking whether the bottom surface of the cylinder head 40 is in place with the support nails 21. The locating pins 22 cooperate with the locating holes on the cylinder head 40 to limit the horizontal position of the cylinder head. Each hydraulic clamp 23 is driven by a hydraulic cylinder respectively. By using the plurality of hydraulic clamps 23 to press down the inner wall of the airway opening on the cylinder head 40, the cylinder head 40 can be fixed and pressed against the top of the tooling body 20. The hydraulic clamps 23 and the hydraulic cylinders are both prior art, and their structures and principles can be clearly understood through the accompanying drawings, so they will not be described in detail here.

[0043] The lifting mechanism 30 includes a lifting cylinder 31 vertically installed on the top of the tooling body 20, and a lifting bracket 32 ​​horizontally fixedly installed on the piston rod of the lifting cylinder 31. The lifting cylinder 31 can drive the lifting bracket 32 ​​to rise and fall. A sliding guide rod 322 is vertically fixedly connected to the bottom of the lifting bracket 32. The sliding guide rod 322 is slidably connected to the tooling body 20. The function of the sliding guide rod 322 is to keep the lifting bracket 32 ​​stable during the lifting process. A roller slideway 321 is provided on the lifting bracket 32 ​​along the horizontal straight line direction. Relying on the roller slideway 321, the cylinder head 40 can be pushed to move above the lifting bracket 32 ​​with less effort, which is convenient for loading and unloading. Guide plates 323 are fixedly connected on both sides of the roller slideway 321 of the lifting bracket 32. The guide plates 323 guide the cylinder head 40 to prevent the cylinder head 40 from deviating from the roller slideway 321.

[0044] One end of the lifting bracket 32 ​​is fixedly connected to a first fixed shaft 324, and a first rotating sleeve 33 is rotatably sleeved on the first fixed shaft 324. A first baffle 331 is fixedly connected to one side of the first rotating sleeve 33, and a first crank handle 332 is fixedly connected to the other side. A first anchor 34 is vertically slidably connected to a position below the first rotating sleeve 33 on the tooling body 20. A first spring 35 is provided between the first anchor 34 and the tooling body 20. The first spring 35 generates an upward elastic force on the first anchor 34, so that the first anchor 34 has a tendency to slide upward. A first connecting rod 341 is hinged on the first anchor 34, and the first connecting rod 341 is hinged to the first crank handle 332. A first boss 342 is provided on the top of the first anchor 34 corresponding to the bottom surface of the lifting bracket 32. The first boss 342 is used to limit the minimum distance between the first anchor 34 and the lifting bracket 32, and a first slot 343 is provided at the lower end of the first anchor 34.

[0045] The other end of the lifting bracket 32 ​​is fixedly connected to a second fixed shaft 325, and a second rotating sleeve 36 is rotatably sleeved on the second fixed shaft 325. A second baffle 361 is fixedly connected to one side of the second rotating sleeve 36, and a second crank handle 362 is fixedly connected to the other side. A second anchor 37 is vertically slidably connected to a position below the second rotating sleeve 36 on the tooling body 20. A second spring 38 is provided between the second anchor 37 and the tooling body 20. The second spring 38 generates an upward elastic force on the second anchor 37, so that the second anchor 37 has a tendency to slide upward. A second connecting rod 371 is hinged on the second anchor 37, and the second connecting rod 371 is hinged to the second crank handle 362. A second boss 372 is provided on the top of the second anchor 37 corresponding to the bottom surface of the lifting bracket 32. The second boss 372 is used to limit the minimum distance between the second anchor 37 and the lifting bracket 32, and a second slot 373 is provided at the lower end of the second anchor 37.

[0046] Furthermore, a clamping plate 11 is fixedly connected to one side of the indexing turntable 10 close to the processing position. According to the state shown in the figure, the first anchor 34 is close to the processing position. At this time, the clamping plate 11 is engaged in the first clamping groove 343, so that the first anchor 34 is vertically limited. When loading in this state, the lifting cylinder 31 is first controlled to extend to raise the lifting bracket 32. As the lifting bracket 32 ​​and the first anchor 34 gradually move away from each other, the first connecting rod 341 pulls the first rocker handle 332 to make the first baffle 331 swing upward to a position higher than the roller slideway 321. At the same time, since the second anchor 37 is not vertically limited, the second anchor 37 can be synchronously raised with the lifting bracket 32 ​​under the elastic action of the second spring 38, and the distance between the second anchor 37 and the lifting bracket 32 ​​does not change, so the second baffle 361 does not swing. The cylinder head 40 can be moved to avoid interference with loading. The cylinder head 40 can then be placed on the roller slide 321 and pushed toward the processing position until the cylinder head 40 abuts against the first baffle 331, and the positioning hole on the cylinder head 40 corresponds to the positioning pin 22 on the tooling body 20. Then the lifting cylinder 31 is controlled to contract to make the lifting bracket 32 ​​descend, and the cylinder head 40 falls on the supporting nail 21 on the tooling body 20, and the positioning pin 22 is inserted into the positioning hole on the cylinder head 40. The multiple hydraulic clamps 23 are controlled to press the cylinder head 40 to start processing. During the descent of the lifting bracket 32, the lifting bracket 32 ​​gradually approaches the first tie member 34, and the first connecting rod 341 pushes the first rocker handle 332, so that the first baffle 331 swings downward to a position lower than the roller slide 321 to avoid interference with the milling path of the milling cutter 50.

[0047] When one end surface of the cylinder head 40 is processed, the tool body 20 can be rotated 180° by the indexing turntable 10, so that the other end surface of the cylinder head 40 can be directly processed without re-clamping. After the tool body 20 is rotated 180°, the vertical limit of the first anchor 34 is released, and the clamping plate 11 slides into the second clamping groove 373 on the second anchor 37, so that the second anchor 37 is vertically limited. The loading operation can also be carried out in this state. The specific principle can refer to the loading process in the aforementioned state.

[0048] The basic principle, main features and advantages of the utility model are shown and described above. 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 for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements all fall within the scope of the utility model to be protected.

Claims

1. A horizontal milling tool for the end face of a large cylinder head, comprising a tool body (20), characterized in that: The tool body (20) is provided with a lifting mechanism (30), and the lifting mechanism (30) comprises A lifting cylinder (31) is vertically arranged on the top of the tooling body (20); A lifting bracket (32) is horizontally fixedly mounted on the piston rod of the lifting cylinder (31); One end of the lifting bracket (32) is fixedly connected to a first fixed shaft (324), a first rotating sleeve (33) is rotatably sleeved on the first fixed shaft (324), one side of the first rotating sleeve (33) is fixedly connected to a first baffle (331), and the other side of the first rotating sleeve (33) is fixedly connected to a first crank handle (332); A first anchor (34) is provided on the tool body (20) below the first rotating sleeve (33), a first connecting rod (341) is hinged on the first anchor (34), the first connecting rod (341) is hinged to the first rocker (332), and the first anchor (34) is vertically limited when approaching the processing position.

2. A large cylinder head end face horizontal milling tool according to claim 1, characterized in that: A dividing turntable (10) is installed at the bottom of the tool body (20).

3. A large cylinder head end face horizontal milling tool according to claim 2, characterized in that: The first anchor (34) is elastically slidably connected to the tool body (20) in the vertical direction, and the first anchor (34) has a tendency to slide upward; A first boss (342) is provided at the top of the first anchor (34) corresponding to the bottom surface of the lifting bracket (32), and a first slot (343) is provided at the lower end of the first anchor (34); A clamping plate (11) is fixedly connected to one side of the indexing turntable (10) close to the processing position, and when the first anchor (34) is close to the processing position, the clamping plate (11) slides into the first clamping groove (343).

4. A large cylinder head end face horizontal milling tool according to claim 3, characterized in that: A first spring (35) is provided between the first anchor (34) and the tool body (20), and the first spring (35) generates an upward elastic force on the first anchor (34).

5. A large cylinder head end face horizontal milling tool as claimed in claim 3, characterized in that: The other end of the lifting bracket (32) is fixedly connected to a second fixed shaft (325), a second rotating sleeve (36) is rotatably sleeved on the second fixed shaft (325), a second baffle (361) is fixedly connected to one side of the second rotating sleeve (36), and second crank handles (362) are fixedly connected to the other two sides; A second anchor (37) is elastically slidably connected vertically to a position below the second rotating sleeve (36) on the tool body (20), and the second anchor (37) has a tendency to slide upwards; A second connecting rod (371) is hinged on the second anchor (37), the second connecting rod (371) is hinged to the second rocker (362), a second boss (372) is provided on the top of the second anchor (37) corresponding to the bottom surface of the lifting bracket (32), and a second slot (373) is provided at the lower end of the second anchor (37); When the second anchor member (37) is close to the processing position, the clamping plate (11) slides into the second clamping groove (373).

6. A large cylinder head end face horizontal milling tool according to claim 5, characterized in that: A second spring (38) is provided between the second anchor (37) and the tool body (20), and the second spring (38) generates an upward elastic force on the second anchor (37).

7. A large cylinder head end face horizontal milling tool according to claim 1, characterized in that: A roller slideway (321) is provided on the lifting bracket (32) along a horizontal straight line direction, and guide plates (323) are fixedly connected to both sides of the roller slideway (321) on the lifting bracket (32).

8. The large cylinder head end face horizontal milling tool according to claim 1, characterized in that: A sliding guide rod (322) is vertically fixedly connected to the bottom of the lifting bracket (32), and the sliding guide rod (322) is slidably connected to the tooling body (20).

9. A large cylinder head end face horizontal milling tool according to any one of claims 1 to 8, characterized in that: The top of the tool body (20) is provided with A plurality of support pins (21) for supporting the bottom surface of the cylinder head; A plurality of positioning pins (22) for defining the horizontal position of the cylinder head; A plurality of hydraulic clamps (23) are used to press the cylinder head onto the top of the tooling body (20).

10. A large cylinder head end face horizontal milling tool according to claim 9, characterized in that: The plurality of support pins (21) include air detection support pins.

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