Accessory head for machining diesel engine rack cavity and machine tool thereof

Abstract

The utility model provides an accessory head for machining a diesel engine rack cavity and a machine tool thereof, and relates to the technical field of diesel engine machining and manufacturing, the accessory head comprises an accessory head body, two mounting end faces are respectively formed at two ends of a main shaft on the lower side of the accessory head body, and cutter heads for milling the rack cavity are mounted on the mounting end faces. Through the double-cutter machine tool accessory head structure, the machining efficiency of the diesel engine rack cavity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine processing and manufacturing, in particular to an accessory head for machining the cavity of a diesel engine frame and a machine tool therefor. Background Technique

[0002] The main frame of a certain diesel engine is 5069 mm long, 2540 mm wide and 2520 mm high, which is a steel structure part with the material S18R. See Figure 7 、 8 , there are 6 cavities 51 on the frame 50, and each cavity 51 has 4 large guide slide surfaces. Currently, the processing difficulties of the main frame are as follows: the frame is a structural cavity part with insufficient rigidity, the large guide slide has a long stroke, and the rough machining efficiency of the large guide slide surface is low. Because the traditional processing uses single-tool machining, there are shortcomings such as long processing time and low efficiency for the large guide slide, and the milling process accounts for a relatively high proportion in the entire processing cycle. Therefore, our company has proposed an accessory head for machining the cavity of a diesel engine frame and a machine tool therefor. Content of the Utility Model

[0003] The purpose of the utility model is to provide an accessory head for machining the cavity of a diesel engine frame and a machine tool therefor, and improve the processing efficiency through the structure of the double-tool machine tool accessory head.

[0004] To achieve the above purpose, the utility model provides an accessory head for machining the cavity of a diesel engine frame, including an accessory head body. Two installation end faces are respectively formed at both ends of the spindle on the lower side of the accessory head body, and cutter discs for milling the cavity of the frame are installed on the installation end faces.

[0005] Tool holders are installed on one side or both sides of the installation end faces, and the cutter discs are installed on the tool holders.

[0006] The tool holder includes a disc body. A first boss is arranged on one side of the disc body. The disc body is provided with a plurality of countersunk bolt holes, the countersunk bolt holes penetrate through the first boss, and the countersunk ends of the countersunk bolt holes are located on the side away from the first boss. Moreover, a plurality of first threaded holes are also arranged on the disc body on the side away from the first boss.

[0007] A first convex block is installed on the installation end face, and a first notch is arranged on the end face of the first boss. The first notch is in fit and clamping connection with the first convex block.

[0008] The disc body is provided with a second boss on the side away from the first boss.

[0009] A second notch is arranged on the disc body on the side away from the first boss, and a second threaded hole is arranged in the second notch.

[0010] A machine tool is provided with the above-mentioned accessory head for machining the cavity of a diesel engine frame installed at the lower end of the ram of the machine tool.

[0011] The utility model has the following technical effects compared with the prior art:

[0012] 1. The utility model avoids the traditional way of single - cutter milling of the large guide slide plate. By means of double - cutter two - way milling to process the large guide slide plate surface inside the machine frame, the processing efficiency and the effective utilization rate of the machine tool are effectively improved. Thus, it circumvents the shortcomings of the long processing time and low efficiency of the traditional single - cutter milling of the large guide slide plate, shortens the milling time of the large guide slide plate, reduces the proportion of milling in the whole processing cycle, and achieves the purpose of improving the processing efficiency of the diesel engine frame components.

[0013] 2. A tool holder is installed between the mounting end face and the cutter head of the utility model to adjust the distance between the two cutter heads on both sides, so that the transverse movement distance of the accessory head body in the cavity is shorter, further improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art:

[0015] Figure 1 It is the front - view structural schematic diagram of the accessory head body of the utility model;

[0016] Figure 2 It is the side - view structural schematic diagram of the accessory head body of the utility model;

[0017] Figure 3 It is the structural schematic diagram of the accessory head body of the utility model after installing cutter heads on two mounting end faces;

[0018] Figure 4 It is the front - view structural schematic diagram of the tool holder of the utility model;

[0019] Figure 5 It is Figure 4 the sectional view A - A structure schematic diagram in

[0020] Figure 6 It is Figure 4 the sectional view B - B structure schematic diagram in

[0021] Figure 7 It is the three - dimensional structure schematic diagram of the diesel engine frame;

[0022] Figure 8 It is the top - view structural schematic diagram of the diesel engine frame.

[0023] Reference numerals:

[0024] Accessory head body 10, mounting end face 11, first convex block 12;

[0025] Ram 20;

[0026] Cutter head 30;

[0027] Tool shank 40, disc body 41, first threaded hole 42, countersunk bolt hole 43, second notch 44, second threaded hole 441, first boss 45, first notch 451, second boss 46,

[0028] Machine frame 50, cavity 51, first large guide slide processing 52, second large guide slide processing 53, third large guide slide processing 54, fourth large guide slide processing 55. Specific implementation mode

[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0030] Embodiment 1:

[0031] Please refer to Figures 1-3 , an accessory head for machining the cavity of a diesel engine frame, including an accessory head body 10. Two installation end faces 11 are respectively formed at both ends of the spindle on the lower side of the accessory head body 10. A cutter head 30 for milling the cavity 51 of the machine frame 50 is installed on the installation end face 11. Through the structure of the machine tool accessory head with two cutters, the machining efficiency of the cavity of the diesel engine frame is improved.

[0032] Embodiment 2:

[0033] On the basis of Embodiment 1, in order to adjust the distance between the two cutter heads 30 on both sides and make the transverse movement distance of the accessory head body 10 in the cavity 51 shorter, please refer to Figure 3 , a tool shank 40 is installed on one side or both sides of the installation end face 11, and the cutter head 30 is installed on the tool shank 40.

[0034] In this embodiment, please refer to Figures 4-6 , the tool shank 40 includes a disc body 41. A first boss 45 is arranged on one side of the disc body 41. The disc body 41 is provided with a plurality of countersunk bolt holes 43. The countersunk bolt holes 43 penetrate through the first boss 45, and the countersunk ends of the countersunk bolt holes 43 are located on the side far from the first boss 45. And a plurality of first threaded holes 42 are also arranged on the disc body 41 on the side far from the first boss 45. When installing the tool shank 40, the bolt passes through the countersunk bolt hole 43 and then is screwed with the threaded hole on the installation end face 11, so as to connect and fix the tool shank 40 with the installation end face 11; when installing the cutter head 30, the bolt passes through the hole on the cutter head 30 and then is screwed with the first threaded hole 42 on the disc body 41, so as to fix the cutter head 30 with the tool shank 40. In this embodiment, there are 4 countersunk bolt holes 43 and 4 first threaded holes 42.

[0035] Embodiment 3:

[0036] On the basis of Embodiment 2, a first convex block 12 is installed on the installation end face 11, a first notch 451 is arranged on the end face of the first boss 45, and the first notch 451 is in fit connection with the first convex block 12. Through a structure similar to the fit of a flat key, the stability and reliability of the connection between the tool holder 40 and the installation end face 11 are improved.

[0037] Embodiment 4:

[0038] On the basis of Embodiment 3, a second boss 46 is arranged on the side of the disk body 41 away from the first boss 45. During installation, the central hole of the tool disk 30 penetrates through the second boss 46, improving the concentricity of the installation of the tool disk 30 and the tool holder 40.

[0039] Embodiment 5:

[0040] On the basis of Embodiment 4, a second notch 44 is arranged on the side of the disk body 41 away from the first boss 45, and a second threaded hole 441 is arranged in the second notch 44. The second notch 44 is used for installing a second convex block, the second convex block is fixed to the second threaded hole 441 through a bolt, and one end of the tool disk 30 has a notch for cooperating with the second convex block. Through the above structure, the stability and reliability of the connection between the tool disk 30 and the tool holder 40 are improved.

[0041] In this application, the tool disk 30 adopts a milling tool disk.

[0042] Embodiment 6:

[0043] A machine tool, and the described accessory head for machining the cavity of a diesel engine frame is installed at the lower end of the ram 20 of the machine tool.

[0044] The working principle or operation process of the present utility model is as follows:

[0045] Refer to Figure 7 、 8 , there are 6 cavities 51 on the frame 50, and each cavity 51 has 4 large guide slide surfaces, namely the first large guide slide machining 52, the second large guide slide machining 53, the third large guide slide machining 54, and the fourth large guide slide machining 55.

[0046] During machining, the accessory head is moved above the frame 50 and aligned with the first cavity 51. Then, through the tool disk 30 on one side, the first large guide slide machining 52 on one side inside the first cavity 51 is machined from top to bottom. After the machining is completed, the accessory head is horizontally displaced a short distance, and the large guide slide surface two 13 inside the first cavity 51 is machined from bottom to top through the tool disk 30 on the other side. Then, the accessory head is moved to the next cavity 51 of the frame 50 for machining.

[0047] After the machining of the first large guide slide 52 and the second large guide slide 53 is completed, adjust the attachment head by 180°.

[0048] Move the attachment head above the last cavity 51 of the machine frame 50, and machine the third large guide slide 54 on one side of the inside of the last cavity 51 from top to bottom through the cutter head 30 on one side. After that, the attachment head is laterally displaced by a certain distance, and the fourth large guide slide 55 inside the cavity 51 is machined from bottom to top through the cutter head 30 on the other side. Then, move the attachment head to the next cavity 51 of the machine frame 50 for machining.

[0049] During one stroke of the up-and-down movement of the attachment head, the large guide slide surfaces on both sides are machined.

Claims

1. An accessory head for machining a diesel engine frame cavity, comprising an accessory head body (10), characterized in that: Two mounting end surfaces (11) are respectively formed at the two ends of the main shaft on the lower side of the accessory head body (10), and a cutter disc (30) for milling the cavity (51) of the frame (50) is mounted on the mounting end surfaces (11); A knife handle (40) is mounted on one or both mounting end surfaces (11), and the knife disc (30) is mounted on the knife handle (40).

2. The accessory head for diesel engine frame cavity machining according to claim 1, characterized in that: The tool handle (40) comprises a disk body (41), a first boss (45) is arranged on one side of the disk body (41), a plurality of countersunk bolt holes (43) are arranged on the disk body (41), the countersunk bolt holes (43) penetrate the first boss (45), the countersunk ends of the countersunk bolt holes (43) are located on a side away from the first boss (45), and a plurality of first threaded holes (42) are also arranged on the disk body (41) on a side away from the first boss (45).

3. The accessory head for diesel engine frame cavity machining according to claim 2, characterized in that: A first protrusion (12) is mounted on the mounting end surface (11), and a first notch (451) is provided on the end surface of the first boss (45), the first notch (451) being engaged and snap-fitted with the first protrusion (12).

4. The accessory head for diesel engine frame cavity machining according to claim 3, characterized in that: The disc body (41) is provided with a second boss (46) on a side away from the first boss (45).

5. The accessory head for diesel engine frame cavity machining according to claim 4, characterized in that: The disc body (41) is provided with a second notch (44) on a side away from the first boss (45), and a second threaded hole (441) is provided in the second notch (44).

6. A machine tool, characterized in that: An accessory head for machining a diesel engine frame cavity as claimed in any one of claims 1 to 5 is installed at the lower end of a slide (20) of a machine tool.

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