Machining milling machine for gear pump shell

Abstract

The invention relates to the technical field of machine tools, in particular to a gear pump shell machining milling machine which comprises a rack and a sliding seat arranged on the rack, a workbench is arranged on the sliding seat, a milling cutter is further arranged on the rack and faces the workbench, the workbench is arranged on the top of the rack, and the milling cutter is installed on a rotating part on the lower portion of the rack through a quick-change head. The machining milling machine further comprises a supporting hook seat, the supporting hook seat is installed on the workbench, and the lower portion of the supporting hook seat supports the inverted gear pump shell body. The gear pump shell body pre-positioned on the supporting hook seat is clamped through the multiple clamping blocks in a multi-point clamping mode, the clamping force is evenly dispersed, clamping deformation of the gear pump shell body is avoided while clamping stability is guaranteed, and the gear pump shell body is prevented from being damaged. And the clamping blocks of the L-shaped structures can temporarily support the outer surface of the thin wall of the gear pump shell body, overall deformation of the gear pump shell body can be avoided, milled short chips can be automatically discharged, and the machining quality of the gear pump shell body is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of machine tools, in particular to a milling machine for machining a gear pump housing. Background Art

[0002] A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport liquid or increase its pressure. It is composed of two gears, a pump body, and two closed spaces formed by front and rear covers. A milling machine is required during the processing of the gear pump housing. The existing milling machine fixes the gear pump housing from the front and then directly completes the milling operation using a milling cutter.

[0003] For example, the Chinese patent with application number CN202011570826.3 discloses a double-sided processing milling machine, including a frame and a workbench. The frame is slidably provided with a slide, and the slide is slidably provided with a power head, and the power head includes a milling cutter driven to rotate by a motor; when switching the processing surface of the workpiece, there is no need to remove the fixture to flip the workpiece and then clamp the fixture, which is more convenient. The clamping of the workpiece during processing is more stable, and the operation of chamfering the intersection of the two processing surfaces can be easily realized. However, for gear pumps with higher noise standards, a vacuum soundproof cavity will need to be processed inside the housing. Due to the existence of the soundproof cavity, the wall thickness of the gear pump housing will become thinner. During the cutting process of the milling machine, the closer to the outer surface of the housing, the thinner it will be. The gear pump housing as a whole is prone to deformation, and due to the limited space in the inner cavity, the short chips under milling are not easy to be discharged, which affects the processing quality of the gear pump housing. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a milling machine for processing gear pump housings, so as to solve the technical problems in the prior art that when processing gear pump housings with specific requirements, the closer to the outer surface of the housing, the thinner the gear pump housing becomes, the gear pump housing as a whole is prone to deformation, and due to the limited inner cavity space, the short chips cut off are difficult to discharge.

[0005] Based on the above purpose, the present invention provides a gear pump housing processing milling machine, including a frame and a slide seat arranged on the frame, a workbench is arranged on the slide seat, a milling cutter is also arranged on the frame, the milling cutter faces the workbench, the workbench is arranged on the top of the frame, and the milling cutter is installed on the rotating part at the bottom of the frame through a quick-change head. The processing milling machine also includes:

[0006] A hook support seat, which is installed on a workbench, and the lower part of the hook support seat supports the inverted gear pump housing body;

[0007] Clamping blocks, there are a plurality of clamping blocks, the plurality of clamping blocks are arranged in the frame, and the clamping ends of the plurality of clamping blocks are all facing the side ridges of the gear pump housing body;

[0008] A liquid spray head, which is arranged above the clamping block, and the liquid spray direction of the liquid spray head is adjustable;

[0009] A mounting seat, which is mounted on the quick-change head and is aligned with the axis of the milling cutter. A movable cutter head is adjustable in the mounting seat;

[0010] The driving component 1 is used to drive the slide seat to slide, so as to drive the gear pump housing body clamped below to move synchronously;

[0011] Driving assembly 2, driving assembly 2 is used to drive the quick-change head to slide, and the sliding direction of the quick-change head and the sliding seat remains perpendicular;

[0012] Driving component three, driving component three is used to drive the quick-change head to rise and fall;

[0013] The driving component four is used to drive a plurality of clamping blocks to clamp the gear pump housing body, and drive the liquid spray head to approach the surface of the gear pump housing body.

[0014] Furthermore, the driving component 1 includes:

[0015] Driving motor 1, driving motor 1 is installed on the upper part of the frame;

[0016] Screw 1, one end of which is mounted on the output end of driving motor 1, the other end of which is rotatably mounted on the inner wall of the frame, and the middle part of the slide seat is threadedly mounted on screw 1;

[0017] A guide rod is installed on the frame, and a slide seat is slidably arranged on the guide rod.

[0018] Furthermore, the second driving component includes:

[0019] Driving motor 2, driving motor 2 is installed on the frame;

[0020] Lead screw 2, one end of which is mounted on the output end of driving motor 2, and the other end of which is rotatably mounted on the frame;

[0021] The sliding base is threadedly mounted on the second lead screw, and the sliding base is also slidably arranged on the frame. The quick-change head can be lifted and lowered and mounted on the sliding base.

[0022] Furthermore, the driving component three includes:

[0023] A driving motor 3, wherein the driving motor 3 is mounted on a side end of the sliding base;

[0024] Active gear, the active gear is installed on the output end of the driving motor three;

[0025] The rack is installed on the rotating part and meshes with the active teeth.

[0026] Furthermore, the drive component 4 includes:

[0027] Hydraulic cylinder, the hydraulic cylinder is installed on the lower end surface of the workbench;

[0028] A movable head, which is mounted on the hydraulic cylinder;

[0029] There are several guide posts, and the guide posts are relatively slidably arranged on the lower end surface of the workbench;

[0030] A connector, the connector is slidably arranged at the lower part of the guide column, the liquid spray head is adjustably installed on the connector, and the clamping block is adjustably installed on the connector;

[0031] A connecting rod, one end of the connecting rod is hinged on the connecting head, and the other end of the connecting rod is hinged on the side end of the movable head.

[0032] Furthermore, an avoidance gap is set between two adjacent connectors, and the hook seat is placed in the avoidance gap.

[0033] Furthermore, a baffle is provided on the mounting seat at the lower end of the movable cutter head, and the milling cutter mouth of the movable cutter head can extend out of the baffle.

[0034] Furthermore, the upper end surface of the mounting seat is an arc-shaped structure.

[0035] Furthermore, a nozzle is provided at the upper end of the mounting seat, and the nozzle is arranged in a circumferential direction and is placed above the arc surface structure.

[0036] Furthermore, a receiving groove is provided at the lower part of the frame.

[0037] The beneficial effects of the present invention are as follows: by using a gear pump casing processing milling machine of the present invention, a plurality of clamping blocks are used to clamp the pre-positioned gear pump casing body on the hook seat in a multi-point clamping manner, so that the clamping force can be evenly dispersed, thereby ensuring stable clamping while avoiding clamping deformation of the gear pump casing body, and the "L"-shaped clamping blocks can temporarily support the thin-walled outer surface of the gear pump casing body, thereby avoiding deformation of the gear pump casing body as a whole, and the short chips produced by milling can be automatically discharged, thereby ensuring the processing quality of the gear pump casing body. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 It is a structural schematic diagram of the present invention;

[0040] Figure 2 It is a structural schematic diagram of the driving component 1 in the present invention;

[0041] Figure 3 It is a schematic diagram of the assembly of the drive assembly 4 and the workbench in the present invention;

[0042] Figure 4 It is a schematic diagram of the assembly of the hook support and the gear pump housing body in the present invention;

[0043] Figure 5 It is a schematic diagram of the assembly of the drive assembly 2 and the drive assembly 3 in the present invention;

[0044] Figure 6 It is a schematic diagram of the assembly of the mounting seat and the milling cutter in the present invention;

[0045] Figure 7 It is a schematic diagram of the assembly of some structures in the present invention.

[0046] The markings in the figure are:

[0047] 1. Frame; 2. Slide; 3. Workbench; 4. Milling cutter; 5. Quick-change head; 6. Hook seat; 7. Gear pump housing; 8. Clamping block; 9. Spray head; 10. Mounting seat; 11. Moving cutter head; 12. Driving motor 1; 13. Lead screw 1; 14. Guide rod; 15. Driving motor 2; 16. Lead screw 2; 17. Sliding base; 18. Driving motor 3; 19. Active gear; 20. Rack; 21. Hydraulic cylinder; 22. Movable head; 23. Guide column; 24. Connector; 25. Connecting rod; 26. Baffle; 27. Spray head; 28. Receiving groove. DETAILED DESCRIPTION

[0048] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0049] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" 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, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0050] The first aspect of the present invention provides a milling machine for machining a gear pump housing, such as Figure 1-7 As shown, it includes a frame 1 and a slide 2 arranged on the frame 1, a workbench 3 is arranged on the slide 2, a milling cutter 4 is also arranged on the frame 1, the milling cutter 4 faces the workbench 3, the workbench 3 is arranged on the top of the frame 1, and the milling cutter 4 is installed on the rotating part at the bottom of the frame 1 through a quick-change head 5. The processing milling machine also includes:

[0051] A hook support seat 6 is installed on the workbench 3, and the lower part of the hook support seat 6 supports the inverted gear pump housing body 7;

[0052] Clamping blocks 8, there are a plurality of clamping blocks 8, the plurality of clamping blocks 8 are arranged in the frame 1, and the clamping ends of the plurality of clamping blocks 8 are all facing the side edges of the gear pump housing body 7;

[0053] A liquid spray head 9, which is disposed above the clamping block 8, and a liquid spray direction of the liquid spray head 9 is adjustable;

[0054] A mounting seat 10, which is mounted on the quick-change head 5 and is aligned with the axis of the milling cutter 4. A movable cutter head 11 is adjustable in the mounting seat 10;

[0055] Driving assembly 1, driving assembly 1 is used to drive the slide 2 to slide, so as to drive the gear pump housing body 7 clamped below to move synchronously;

[0056] The second driving component is used to drive the quick-change head 5 to slide, and the sliding direction of the quick-change head 5 and the slide seat 2 remains perpendicular;

[0057] Driving component three, driving component three is used to drive the quick-change head 5 to move up and down;

[0058] Driving component four, driving component four is used to drive a plurality of clamping blocks 8 to clamp the gear pump housing body 7, and drive the liquid spray head 9 to approach the surface of the gear pump housing body 7.

[0059] In this embodiment, the driving component 1 includes:

[0060] A driving motor 12, the driving motor 12 is installed on the upper part of the frame 1;

[0061] A lead screw 13, one end of which is mounted on the output end of a driving motor 12, the other end of which is rotatably mounted on the inner wall of the frame 1, and a middle portion of the slide 2 is threadedly mounted on the lead screw 13;

[0062] The guide rod 14 is installed on the frame 1 , and the slide seat 2 is slidably arranged on the guide rod 14 .

[0063] In this embodiment, the driving component 2 includes:

[0064] A second driving motor 15, wherein the second driving motor 15 is mounted on the frame 1;

[0065] A lead screw 16, one end of which is mounted on the output end of the drive motor 15, and the other end of which is rotatably mounted on the frame 1;

[0066] The sliding base 17 is threadedly mounted on the lead screw 16 . The sliding base 17 is also slidably mounted on the frame 1 . The quick-change head 5 can be lifted and lowered on the sliding base 17 .

[0067] In this embodiment, the driving component three includes:

[0068] A driving motor 3 18, the driving motor 3 18 is mounted on the side end of the sliding base 17;

[0069] Active gear 19, active gear 19 is mounted on the output end of drive motor 3 18;

[0070] The rack 20 is installed on the rotating part, and the rack 20 is meshed with the driving tooth 19.

[0071] In this embodiment, the driving component 4 includes:

[0072] A hydraulic cylinder 21, which is mounted on the lower end surface of the workbench 3;

[0073] A movable head 22, which is mounted on the hydraulic cylinder 21;

[0074] A guide post 23, wherein the guide posts 23 are provided in a plurality and the plurality of guide posts 23 are relatively slidably disposed on the lower end surface of the workbench 3;

[0075] The connector 24 is slidably disposed at the lower part of the guide column 23, the liquid spray head 9 is adjustably mounted on the connector 24, and the clamping block 8 is adjustably mounted on the connector 24;

[0076] A connecting rod 25 , one end of which is hinged to the connecting head 24 , and the other end of which is hinged to the side end of the movable head 22 .

[0077] In this embodiment, a baffle 26 is provided on the mounting base 10 at the lower end of the movable cutter head 11 , and the milling cutter 4 of the movable cutter head 11 can extend out of the baffle 26 .

[0078] In this embodiment, when in use, the gear pump housing body 7 to be milled is first held upside down with the opening facing downward on the lower part of the hook seat 6, and then the slide 2 is driven to move by the driving component 1, that is, the output end of the driving motor 12 drives the lead screw 13 to rotate, thereby driving the slide 2 to move along the direction of the guide rod 14;

[0079] At the same time, the quick-change head 5 is driven to move by the second driving component, that is, the second lead screw 16 is driven to rotate by the output end of the second driving motor 15, thereby driving the sliding base 17 to move perpendicularly to the moving path of the slide 2 until the milling cutter 4 is placed within the processing range of the gear pump housing body 7;

[0080] Then, the side edges of the gear pump housing body 7 are stably clamped by four pairs of driving components, that is, the output end of the hydraulic cylinder 21 leads the movable head 22 to move upward, and the connecting heads 24 around are pulled closer to each other through the paired connecting rods 25 around, so that the clamping blocks 8 and the jet heads 27 installed on the connecting heads 24 are synchronously moved closer to the gear pump housing body 7, and finally, the gear pump housing body 7 pre-positioned on the hook seat 6 is clamped by a plurality of clamping blocks 8 in a multi-point clamping manner, and the clamping force is evenly dispersed, ensuring stable clamping while avoiding clamping deformation of the gear pump housing body 7, and the clamping blocks 8 with an "L"-shaped structure can temporarily support the thin-walled outer surface of the gear pump housing body 7;

[0081] Then, the gear pump housing body 7 is milled by the driving assembly 3, that is, the driving motor 3 18 drives the active gear 19 to rotate, and the rack 20 drives the milling cutter 4 in a rotating state on the rotating part to move upward for milling, and the cooling liquid sprayed by the surrounding jet heads 27 is used to cool the surface of the gear pump housing body 7 synchronously;

[0082] When machining the annular groove in the vacuum chamber, it is necessary to adjust the installation position of the mounting seat 10 on the quick-change head 5, and adjust the extension length of the movable cutter head 11 from the baffle 26. The milling chips will automatically fall downward, thereby completing the annular groove machining operation of the vacuum chamber in the gear pump housing body 7.

[0083] In this embodiment, if Figure 3 As shown, an avoidance gap is set between two adjacent connectors 24 , and the hook seat 6 is placed in the avoidance gap, so that the hook seat 6 does not interfere with the movement of the connector 24 .

[0084] In this embodiment, if Figure 6 , Figure 7 As shown, the upper end surface of the mounting seat 10 is an arc-shaped surface structure, which accelerates the speed of chip breaking and falling when the annular groove in the vacuum chamber is processed.

[0085] In this embodiment, if Figure 7 As shown, a nozzle 27 is provided at the upper end of the mounting seat 10. The nozzle 27 is arranged in an annular direction and is placed above the arc surface structure to prevent flying debris from adhering to the inner wall of the annular groove in the vacuum chamber of the gear pump housing body 7.

[0086] In this embodiment, a receiving tank 28 is provided at the lower part of the frame 1 to recover the chips and the coolant.

[0087] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the above aspects of the present invention, which are not provided in detail for the sake of simplicity.

[0088] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A milling machine for processing a gear pump housing, comprising a frame (1) and a slide (2) arranged on the frame (1), a workbench (3) being arranged on the slide (2), a milling cutter (4) being arranged on the frame (1), the milling cutter (4) facing the workbench (3), characterized in that: The workbench (3) is arranged on the top of the frame (1), and the milling cutter (4) is installed on the rotating part at the bottom of the frame (1) through a quick-change head (5). The milling machine also includes: A hook support seat (6), the hook support seat (6) is installed on the workbench (3), and the lower part of the hook support seat (6) supports the inverted gear pump housing body (7); A clamping block (8), wherein there are a plurality of clamping blocks (8), the plurality of clamping blocks (8) are arranged in the frame (1), and the clamping ends of the plurality of clamping blocks (8) are all facing the side edges of the gear pump housing body (7); A liquid spray head (9), the liquid spray head (9) is arranged above the clamping block (8), and the liquid spray direction of the liquid spray head (9) is adjustable; A mounting seat (10), the mounting seat (10) is mounted on the quick-change head (5) and is aligned with the axis of the milling cutter (4), and a movable cutter head (11) is adjustable in the mounting seat (10); A driving assembly 1, the driving assembly 1 is used to drive the slide seat (2) to slide, so as to drive the gear pump housing body (7) clamped below to move synchronously; A second driving assembly, the second driving assembly is used to drive the quick-change head (5) to slide, and the sliding directions of the quick-change head (5) and the slide seat (2) remain perpendicular; A driving component three, the driving component three is used to drive the quick-change head (5) to move up and down; The drive assembly four is used to drive a plurality of clamping blocks (8) to clamp the gear pump housing body (7), and drive the liquid spray head (9) to approach the surface of the gear pump housing body (7).

2. A gear pump housing milling machine according to claim 1, characterized in that: The drive component 1 includes: A driving motor 1 (12), wherein the driving motor 1 (12) is mounted on the upper part of the frame (1); A lead screw (13), one end of which is mounted on the output end of a drive motor (12), the other end of which is rotatably mounted on the inner wall of the frame (1), and the middle part of the slide seat (2) is threadedly mounted on the lead screw (13); A guide rod (14) is mounted on the frame (1), and a slide seat (2) is slidably arranged on the guide rod (14).

3. A gear pump housing milling machine according to claim 1, characterized in that: Drive component 2 includes: A second driving motor (15), wherein the second driving motor (15) is mounted on the frame (1); A second lead screw (16), one end of which is mounted on the output end of the second drive motor (15), and the other end of which is rotatably mounted on the frame (1); The sliding base (17) is threadedly mounted on the second lead screw (16). The sliding base (17) is also slidably mounted on the frame (1). The quick-change head (5) can be lifted and lowered on the sliding base (17).

4. A milling machine for machining a gear pump housing according to claim 3, characterized in that: Drive component three includes: A driving motor three (18), the driving motor three (18) is mounted on a side end of the sliding base (17); Active gear (19), the active gear (19) is mounted on the output end of the driving motor three (18); The rack (20) is installed on the rotating part, and the rack (20) is meshed with the driving tooth (19).

5. A milling machine for machining a gear pump housing according to claim 1, characterized in that: Drive component four includes: A hydraulic cylinder (21), the hydraulic cylinder (21) is mounted on the lower end surface of the workbench (3); A movable head (22), the movable head (22) is mounted on the hydraulic cylinder (21); A guide column (23), wherein the guide columns (23) are provided in a plurality and the plurality of guide columns (23) are relatively slidably disposed on the lower end surface of the workbench (3); A connector (24) is slidably mounted on the lower part of the guide column (23), the liquid spray head (9) is adjustably mounted on the connector (24), and the clamping block (8) is adjustably mounted on the connector (24); A connecting rod (25), one end of which is hinged to the joint (24), and the other end of which is hinged to the side end of the movable head (22).

6. A gear pump housing milling machine according to claim 5, characterized in that: An escape gap is provided between two adjacent joints (24), and the hook support seat (6) is placed in the escape gap.

7. A gear pump housing milling machine according to claim 1, characterized in that: A baffle (26) is provided on the mounting seat (10) at the lower end of the movable cutter head (11), and the milling cutter (4) of the movable cutter head (11) can extend out of the baffle (26).

8. A milling machine for machining a gear pump housing according to claim 7, characterized in that: The upper end surface of the mounting seat (10) is in an arc-shaped structure.

9. A milling machine for machining a gear pump housing according to claim 8, characterized in that: The upper end of the mounting seat (10) is provided with a spray head (27), which is arranged in a circumferential direction and is placed above the arc surface structure.

10. A gear pump housing milling machine according to claim 1, characterized in that: A receiving groove (28) is provided at the lower part of the frame (1).

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