Cooling and spraying device of external thread grinding machine

Abstract

The utility model discloses a cooling and spraying device of an external thread grinding machine, and relates to the technical field of external thread machining and cooling. The spraying device is installed on a forward moving door of a complete machine protective cover of the external thread grinding machine and can move in a preset moving space along with opening of the forward moving door. The cooling and spraying device comprises a plurality of supports which are respectively fixed on a front housing and a forward door of the external thread grinding machine; the hydraulic rubber pipes are fixed on the plurality of brackets through joints; the drag chain is fixed on the bracket; the spraying units are communicated with the hydraulic rubber pipe. And the hydraulic rubber pipe penetrates into the drag chain. Cooling oil is filled in the hydraulic rubber pipe, and the flow of the cooling oil is adjustable. Cooling oil directly flows to the spraying unit from an oil inlet of the hydraulic rubber pipe, and the spraying unit sprays the cooling oil to the surface of a workpiece. According to the technical scheme, the cooling oil can cover the maximum-length workpiece which can be machined by the machine tool, the water outlet position does not need to be adjusted after installation is completed, the machining time of a single workpiece is effectively shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of external thread processing cooling, and particularly relates to a cooling spray device for an external thread grinding machine. Background Art

[0002] A large amount of heat is generated during the process of grinding an external thread workpiece. If this heat is not transferred in time, it will cause the workpiece to be deformed by heat, thereby causing additional machining errors.

[0003] Currently, in the aspect of workpiece cooling of external thread grinding machines on the market, the common situation is a cooling system composed of a small number of movable hoses. A single movable hose can only cool a single position on the workpiece. When the workpiece is relatively long, this cooling system cannot completely cool the entire workpiece, bringing unstable factors to the surface quality and machining accuracy of the workpiece. Ultimately, the problems reflected on the workpiece are poor accuracy and poor geometric tolerance. During mass production, the adverse effects caused by such unstable factors will lead to the same accuracy defect problems in batches of workpieces, increasing the repair rate and scrap rate of high-precision workpieces, and having a greater impact on the daily production of enterprises. During small-batch production, it is necessary to frequently adjust the water outlet position of the movable hose, resulting in an increase in the machining time of a single workpiece and a reduction in work efficiency. Summary of the Utility Model

[0004] Purpose of the utility model: Aiming at the above-mentioned shortcomings mentioned in the background art and in order to avoid affecting the operation of the machine tool due to the existence of movable hoses, the utility model provides an optimized and improved cooling spray device for an external thread grinding machine.

[0005] Technical solution: A cooling spray device for an external thread grinding machine is installed on the forward moving door of the overall machine protection cover of the external thread grinding machine and can move within a predetermined movable space as the forward moving door opens. The cooling spray device includes:

[0006] A plurality of brackets are respectively fixed on the front cover of the external thread grinding machine and the forward moving door;

[0007] A hydraulic hose, the two ends of which are respectively fixed on a plurality of brackets through joints;

[0008] A drag chain, the two ends of which are respectively fixed on the brackets; the hydraulic hose penetrates into the drag chain;

[0009] A plurality of spray units are communicated with the hydraulic hose;

[0010] Cooling oil is passed through the hydraulic hose, and the flow rate of the cooling oil is adjustable; the cooling oil directly reaches the spray unit from the oil inlet of the hydraulic hose, and the spray unit sprays the cooling oil onto the surface of the workpiece.

[0011] In a further embodiment, one end of the hydraulic hose extending out of the drag chain is connected to a steel pipe.

[0012] In a further embodiment, the spraying unit includes a ball valve and a nozzle;

[0013] The ball valve is connected to the steel pipe through a joint; the nozzle is connected to the ball valve;

[0014] Controlling the ball valve realizes the adjustment of the flow rate of the cooling oil in the hydraulic hose.

[0015] In a further embodiment, a plurality of pipe clamps and pipe clamp brackets are provided on the steel pipe;

[0016] The pipe clamp brackets are fixed on the front moving door; the pipe clamps are arranged on the pipe clamp brackets;

[0017] The steel pipe passes through the pipe clamp, and the steel pipe is fixed on the pipe clamp bracket by the pipe clamp.

[0018] In a further embodiment, the steel pipes are arranged in a straight line, and the projection plane of the steel pipes covers the workpiece processing area.

[0019] In a further embodiment, a plurality of nozzles are arranged in an array on the steel pipe.

[0020] In a further embodiment, the center distance between each nozzle is 140 mm.

[0021] Advantageous effects: The present utility model discloses a cooling and spraying device for an external thread grinding machine, which has the advantages that the cooling oil can cover the workpiece with the maximum length that can be processed by the machine tool. After installation, there is no need to adjust the water outlet position, effectively reducing the processing time of a single workpiece and improving work efficiency; and the cooling and spraying system is installed on the front moving door of the whole machine protection cover of the machine tool, and will move along with the opening of the front moving door, without occupying the operation and use space of the machine tool due to the flexible hose. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model in the state where the front moving door is closed.

[0023] Figure 2 It is a schematic diagram of the overall structure of the present utility model in the state where the front moving door is open.

[0024] Figure 3 It is a schematic diagram of the connection structure of the spraying system of the present utility model.

[0025] The reference numerals in the figures are as follows: 1. front cover (left); 2. front cover (right); 3. front moving door (left); 4. front moving door (right); 5. rear cover; 6. hydraulic hose; 7. drag chain; 8. right-angle through-wall joint; 9. steel pipe I; 10. straight through-wall joint; 11. straight-through joint; 12. ball valve; 13. three-way joint; 14. reducing joint; 15. internal thread joint; 16. nozzle; 17. steel pipe II; 18. pipe clamp; 19. pipe clamp bracket; 20. bracket I; 21. bracket II. Detailed implementation manners

[0026] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. However, it will be apparent to one of ordinary skill in the art that the present utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in order to avoid obscuring the present utility model.

[0027] In order to solve the above problems mentioned in the background art, and at the same time to avoid affecting the operation of the machine tool due to the presence of the flexible hose, a cooling and spraying device for an external thread grinding machine is provided herein, which has the advantage that the cooling oil can cover the workpiece with the maximum length that can be processed by the machine tool. After installation, there is no need to adjust the water outlet position, effectively reducing the processing time of a single workpiece and improving work efficiency. And the cooling and spraying system is installed on the front moving door of the overall machine protection cover of the machine tool and will move as the front moving door opens, without occupying the operation and use space of the machine tool due to the flexible hose.

[0028] The cooling and spraying device proposed in this embodiment is composed of a drag chain 7, a hydraulic hose 6, steel pipes, a ball valve 12, a nozzle 16 and joints. The hydraulic hose 6 passes through the drag chain 7 and is then connected to the ball valve 12 through joints and steel pipes. The ball valve 12 is connected to the nozzle 16 through joints and steel pipes.

[0029] In order to fix the above-mentioned hydraulic hose 6, two brackets are designed. Bracket I 20 and bracket II 21 are respectively fixed on the front cover (left) 1, front cover (right) 2, front moving door (left) 3 and front moving door (right) 4; the hydraulic hose 6 is fixed on the above two brackets through joints and is also fixed on the rear cover 5.

[0030] In order to enable the above-mentioned hydraulic hose 6 to move regularly during the movement of the front moving door, a drag chain 7 is designed. The hydraulic hose 6 is threaded into the drag chain 7, and both ends of the drag chain 7 are respectively fixed on the above two brackets by screws.

[0031] In order to facilitate the adjustment of the flow rate of the entire cooling and spraying system, a ball valve 12 is designed before the cooling oil enters the nozzle 16. It is connected to the hydraulic hose 6 through joints and steel pipes, and the flow rate can be adjusted at any time according to the on-site situation during operation. SeeFigure 3 As shown, the hydraulic hose 6 led out from the drag chain 7 is connected to the steel pipe I9 through a right-angle through-wall joint 8. The steel pipe I9 is then connected to a straight through-wall joint 10 and accesses a straight-through joint 11. The straight-through joint 11 then accesses a ball valve 12. The ball valve 12 is connected to a three-way joint 13. The three-way joint 13 is connected to a reducing joint 14. Finally, the reducing joint 14 is connected to an internal thread joint 15. The nozzle 16 is screwed onto the internal thread joint 15 to complete the installation.

[0032] In addition, one end of the horizontal direction of the three-way joint 13 is connected to the steel pipe II17. One end of the steel pipe II17 accesses a three-way joint 13. The three-way joint 13 is connected to a reducing joint 14. Finally, the reducing joint 14 is connected to an internal thread joint 15. The nozzle 16 is screwed onto the internal thread joint 15 to complete the installation of another spray unit. In order to enable the cooling oil to cover the workpiece with the maximum machinable length of the machine tool, multiple nozzles 16 are designed. The center distance between each nozzle 16 is 140 mm. Each nozzle 16 is connected to the outlet of the ball valve 12 through joints and steel pipes. By using the end connection of the three-way joint 13, multiple nozzles 16 can be arrayed in this way.

[0033] In order to make the structure of the entire cooling spray system stable, two pipe clamps 18 and pipe clamp brackets 19 are designed on the steel pipe connecting the nozzle 16 and the ball valve 12. The two pipe clamps 18 fix the steel pipe on the two brackets respectively through screws. The bracket I20 and the bracket II21 are respectively fixed on the front moving door (left) 3 and the front moving door (right) 4 through screws.

[0034] The cooling oil directly reaches the nozzle 16 from the oil inlet of the above-mentioned hydraulic hose 6 and finally sprays the cooling oil onto the workpiece surface to achieve the purpose of cooling.

[0035] As above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation of the present invention itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the present invention defined by the appended claims.

Claims

1. A cooling spray device for an external thread grinding machine, which is installed on the front moving door of the overall protective cover of the external thread grinding machine and can move within a predetermined activity space as the front moving door opens; characterized in that, The cooling spray device includes: a number of brackets, which are respectively fixed on the front cover and the forward moving door of the external thread grinding machine; a hydraulic hose, the two ends of which are respectively fixed on a number of brackets through connectors; a drag chain, the two ends of which are respectively fixed on the brackets; the hydraulic hose passes through the drag chain; a number of spray units, which are communicated with the hydraulic hose; cooling oil is passed through the hydraulic hose, and the flow rate of the cooling oil is adjustable; the cooling oil directly reaches the spray unit from the oil inlet of the hydraulic hose, and the spray unit sprays the cooling oil onto the surface of the workpiece.

2. The cooling spray device for an external thread grinding machine according to claim 1, wherein: One end of the hydraulic hose extending out of the drag chain is connected to a steel pipe.

3. The cooling spray device for an external thread grinding machine according to claim 2, characterized in that: The spray unit includes a ball valve and a nozzle; the ball valve is connected to the steel pipe through a connector; the nozzle is connected to the ball valve; Controlling the ball valve realizes the adjustment of the flow rate of the cooling oil in the hydraulic hose.

4. The cooling spray device for an external thread grinding machine according to claim 2, wherein: A number of pipe clamps and pipe clamp brackets are provided on the steel pipe; the pipe clamp brackets are fixed on the forward moving door; the pipe clamps are arranged on the pipe clamp brackets; the steel pipe passes through the pipe clamps, and the pipe clamps fix the steel pipe on the pipe clamp brackets.

5. The cooling spray device for an external thread grinding machine according to claim 2, characterized in that: The steel pipes are arranged in a straight line, and the projection surface of the steel pipes covers the workpiece processing area.

6. The cooling spray device for an external thread grinding machine according to claim 5, characterized in that: A number of nozzles are arranged in an array on the steel pipe.

7. The cooling spray device for an external thread grinding machine according to claim 6, wherein: The center distance of each nozzle is 140 mm.

Images