Follow-up grinding machine for machining eccentric shaft

Abstract

The invention relates to an eccentric shaft machining follow-up grinding machine, and relates to the field of eccentric shaft machining, the eccentric shaft machining follow-up grinding machine comprises a machine body, a cooling device, a clamping mechanism, a hydrostatic guideway and a machining mechanism, the hydrostatic guideway drives the machining mechanism to move close to or away from the clamping mechanism, and the machine body is provided with a partition plate, a machining chamber and a driving chamber; the machining chamber and the driving chamber are located on the two opposite sides of the partition plate respectively, the hydrostatic guideway is located in the driving chamber, the cooling device and the clamping mechanism are located in the machining chamber, and the machining mechanism extends into the machining chamber. The hydrostatic guideways are arranged in the driving chambers arranged at intervals in the processing chamber, so that the contact of the hydrostatic guideways with cooling water, metal filings and other substances is reduced, the influence of the cooling water, the metal filings and other metal substances on the working of the hydrostatic guideways is reduced, and the processing precision is improved.

Description

Technical Field

[0001] This application relates to the field of eccentric shaft machining, and more particularly to a follower grinding machine for eccentric shaft machining. Background Technology

[0002] Eccentric shafts are common mechanical parts. They are characterized by the fact that the center line of the shaft does not coincide with several of its center lines, resulting in an eccentricity. They are often used to drive and control the movement of various mechanical components.

[0003] Eccentric shaft machining follower grinder is a machine tool used to process eccentric shafts. It usually uses high-precision, high-rigidity hydrostatic guideways to ensure the accuracy and stability of eccentric shaft machining.

[0004] In related technologies, the hydrostatic guideways in eccentric shaft follower grinding machines generally adopt an open design, which is easily affected by cooling water, metal impurities and dust during the processing, resulting in a decrease in accuracy, and needs to be improved. Summary of the Invention

[0005] In order to reduce the impact of cooling water, metal impurities and other factors on hydrostatic guideways during the machining process, this application provides a follower grinding machine for machining eccentric shafts.

[0006] An eccentric shaft machining follower grinding machine includes a bed, a cooling device disposed on the bed, a clamping mechanism disposed on the bed, a hydrostatic guide rail disposed on the bed, and a machining mechanism disposed on the hydrostatic guide rail. The hydrostatic guide rail drives the machining mechanism to move closer to or away from the clamping mechanism. The bed is provided with a partition, and the bed is provided with a machining chamber and a drive chamber. The machining chamber and the drive chamber are respectively located on opposite sides of the partition. The hydrostatic guide rail is located in the drive chamber. The cooling device and the clamping mechanism are both located in the machining chamber, and the machining mechanism extends into the machining chamber.

[0007] By adopting the above technical solution, in the actual processing, most of the cooling water sprayed by the cooling device and the metal chips generated during processing are located in the processing chamber. By setting the hydrostatic guide rail in the drive chamber which is spaced apart from the processing chamber, the contact between the hydrostatic guide rail and cooling water, metal chips and other substances is reduced. This helps to reduce the impact of coolant, metal chips and other metal substances on the operation of the hydrostatic guide rail and improves the processing accuracy.

[0008] Preferably, the bed is provided with a partition, the machining chamber and the drive chamber are located on opposite sides of the partition, the partition is provided with a sliding opening, the machining mechanism extends into the machining chamber through the sliding opening, the machining mechanism is provided with a baffle, when the machining mechanism abuts against the inner walls on both sides parallel to the sliding direction of the machining mechanism, the baffle covers the sliding opening.

[0009] When the above technical solution is adopted in actual use, the hydrostatic guide rail drives the machining mechanism to move in the sliding groove during the actual processing. By setting a baffle on the machining mechanism, the cover plate keeps the sliding opening closed during the movement of the machining mechanism, so that metal chips and cooling water in the machining chamber are not easy to enter the drive chamber from the sliding opening, which helps to reduce the influence of the outside on the hydrostatic guide rail.

[0010] Preferably, the processing mechanism includes a drive unit disposed on the hydrostatic guide rail and a processing unit disposed on the drive unit, the drive unit drives the processing unit to perform processing, a cover is provided on the hydrostatic guide rail, and the drive unit is located inside the cover.

[0011] By adopting the above technical solution, in the actual processing, the hydrostatic guide rail drives the drive unit to move, which in turn drives the processing unit to move closer to the clamping mechanism. The drive unit drives the processing unit to process the eccentric shaft. The cover protects the drive unit, which helps to reduce the impact of dust or splashing cooling water on the drive frame and helps to improve the service life of the drive unit.

[0012] Preferably, the projection of the processing section in the direction parallel to the distribution of the processing chamber and the drive chamber is located inside the baffle.

[0013] By adopting the above technical solution, during the actual processing, cooling water is sprayed onto the processing section. By increasing the area of ​​the baffle, the cooling water splashed up from the processing section falls onto the baffle, which helps to reduce the gap between the baffle and the partition.

[0014] Preferably, the machine bed is provided with a drain port, which is located in the processing chamber.

[0015] By adopting the above technical solution, in the actual processing, the cooling water in the processing chamber carries metal shavings out of the processing chamber from the drain port, which helps to reduce the accumulation of coolant in the processing chamber and the situation where it seeps into the drive chamber from the gap between the baffle and the partition.

[0016] Preferably, the bed is provided with a guide surface, which is inclined downward in the direction close to the drain port.

[0017] By adopting the above technical solution and setting a guide surface, water in the processing chamber can be quickly discharged from the drain outlet.

[0018] Preferably, the partition is provided with a drainage channel, which is located below the slide and in the drive chamber.

[0019] By adopting the above technical solution, in the actual processing, the cooling water or debris in the processing chamber enters the drive chamber through the sliding port from the gap between the baffle and the partition. The cooling water flowing into the drive chamber enters the drainage channel downward under the action of gravity, which helps to reduce the contact of cooling water entering from the gap between the partition and the baffle with the static pressure guide rail.

[0020] Preferably, the partition is provided with a water outlet, which is connected to the drainage channel and the processing chamber.

[0021] By adopting the above technical solution, the drainage channel and the processing chamber are connected through the water inlet, which facilitates the rapid discharge of cooling water into the drive chamber.

[0022] Preferably, the bed is provided with a baffle plate, the baffle plate is located in the processing chamber, a flow gap is provided between the baffle plate and the partition, and the projection of the baffle plate in the direction close to the partition plate covers the water outlet.

[0023] By adopting the above technical solution and installing a baffle plate near the water outlet, it is beneficial to reduce the amount of water splashed in the processing chamber that enters the drive chamber through the water outlet.

[0024] In summary, this application includes at least one of the following technical effects: 1. By setting the hydrostatic guide rail in the drive chamber, which is spaced apart from the machining chamber, the contact between the hydrostatic guide rail and substances such as cooling water and metal chips is reduced. This helps to reduce the impact of coolant, metal chips and other metallic substances on the operation of the hydrostatic guide rail and improves machining accuracy. 2. By setting a baffle on the machining mechanism, the cover plate keeps the sliding opening closed during the movement of the machining mechanism, making it difficult for metal chips and cooling water in the machining chamber to enter the drive chamber from the sliding opening, which helps to reduce the influence of the outside on the hydrostatic guide rail. 3. During actual processing, cooling water is sprayed onto the processing section. By increasing the area of ​​the baffle, the cooling water splashed up from the processing section falls onto the baffle, which helps to reduce the amount of water entering the gap between the baffle and the partition. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0026] Figure 2 This is a partial structural diagram of this embodiment, mainly showing the internal structure of the bellows cover.

[0027] Figure 3 This is a partial cross-sectional view of the mounting base in this embodiment, mainly showing the internal structure of the processing chamber and the drive chamber.

[0028] Figure 4 for Figure 3The enlarged view of section A mainly shows the relationship between the baffle, partition and drainage channel.

[0029] Explanation of reference numerals in the attached drawings: 1. Bed; 11. Mounting seat; 111. Guide surface; 12. Frame; 121. Water baffle; 122. Flow gap; 13. Machining chamber; 14. Drive chamber; 15. Drain outlet; 3. Clamping mechanism; 4. Hydrostatic guide rail; 41. Drive assembly; 411. Drive component two; 412. Lead screw; 42. Sliding seat; 421. Cover; 4211. Clearance opening; 43. Bellows cover; 5. Machining mechanism; 51. Drive unit; 511. Baffle; 52. Machining unit; 6. Partition; 61. Sliding opening; 62. Drainage channel; 63. Water outlet. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a follower grinding machine for machining eccentric shafts. (Refer to...) Figure 1 and Figure 2 This application discloses a follower grinding machine for machining eccentric shafts. For example... Figure 1 As shown, a follower grinding machine for machining eccentric shafts includes a bed 1, a cooling device, a clamping mechanism 3, a hydrostatic guide rail 4, and a machining mechanism 5. The bed 1 includes a mounting base 11 and a frame 12. The frame 12 is fixedly connected to the upper end face of the mounting base 11. A partition 6 is fixedly mounted on the mounting base 11 and fixedly connected to the mounting base 11 and the frame 12. The partition 6, the frame 12, and the mounting base 11 are spliced ​​together to form a machining chamber 13 and a drive chamber 14. The machining chamber 13 and the drive chamber 14 are located on opposite sides of the partition 6. The cooling device and the clamping mechanism 3 are both located in the machining chamber 13. The cooling device is mounted on the mounting base 11 and is used to spray cooling water into the machining chamber 13. The clamping mechanism 3 is mounted on the mounting base 11 and is used to clamp the eccentric shaft. The hydrostatic guide rail 4 is located in the drive chamber 14, and the machining mechanism 5 is located above the hydrostatic guide rail 4. The machining mechanism 5 is horizontally slidably connected to the mounting base 11. A sliding opening 61 is provided on the partition plate 6, through which the machining mechanism 5 extends into the machining chamber 13. The machining mechanism 5 slides closer to or away from the clamping mechanism 3. The machining mechanism 5 is used for machining the eccentric shaft. The location and structure of the cooling device are not shown in the accompanying drawings of this embodiment. In actual use, the cooling device is generally externally connected to the bed 1.

[0032] Reference Figure 2A drive assembly 41 is mounted on the mounting base 11. The drive assembly 41 includes a second drive component 411 and a lead screw 412. The second drive component 411 is fixed on the mounting base 11, and the lead screw 412 is rotatably connected to the mounting base 11. A sliding seat 42 is slidably connected to the mounting base 11. The lead screw 412 is threadedly connected to the sliding seat 42. The sliding direction of the sliding seat 42 is parallel to the sliding direction of the processing mechanism 5. The rotation axis of the lead screw 412 is parallel to the sliding direction of the sliding seat 42. The output shaft of the second drive component 411 is coaxially fixedly connected to the lead screw 412. The second drive component 411 drives the lead screw 412 to rotate, thereby driving the sliding seat 42 to move. The hydrostatic guide rail 4 is located above the sliding seat 42. The hydrostatic guide rail 4 is driven to move through the cooperation between the second drive component 411, the lead screw 412 and the sliding seat 42, thereby driving the processing mechanism 5 to move closer to or away from the clamping mechanism 3. In this embodiment, the second driving component 411 is a servo motor, and the lead screw 412 is a ball screw 412.

[0033] The hydrostatic guide rail 4 includes an upper slide plate and a lower slide plate. The lower slide plate is threadedly connected to a ball screw 412. The machining mechanism 5 is located above the upper slide plate and is fixedly connected to it. The upper slide plate is located above the lower slide plate, and the upper and lower slide plates are horizontally slidably connected. The sliding direction of the upper slide plate is perpendicular to the sliding direction of the lower slide plate. In this embodiment, a linear motor drives the upper slide plate to move.

[0034] Reference Figure 1 and Figure 2 A bellows cover 43 is fixedly connected to the mounting base 11. The bellows cover 43 is located on opposite sides of the sliding base 42. The opposite ends of the bellows cover 43 are fixedly connected to the mounting base 11 and the sliding base 42 respectively. The bellows cover 43, the sliding base 42 and the mounting base 11 are spliced ​​together to form a receiving cavity. The second drive component 411 and the lead screw 412 are both located in the receiving cavity, which helps to reduce the influence of the external environment on the second drive component 411 and the lead screw 412 and helps to improve the service life of the second drive component 411 and the lead screw 412.

[0035] Reference Figure 1 and Figure 2 The machining mechanism 5 includes a drive unit 51 and a machining unit 52. The drive unit 51 is located above the hydrostatic guide rail 4 and is fixedly connected to the hydrostatic guide rail 4. The drive unit 51 is slidably connected to the mounting base 11 via the hydrostatic guide rail 4. One end of the drive unit 51 near the machining chamber 13 extends into the machining chamber 13 through the sliding port 61. The machining unit 52 is located inside the machining chamber 13 and is fixedly connected to the end of the drive unit 51 that extends into the machining chamber 13. The drive unit 51 drives the machining unit 52 to machine the eccentric shaft. In this embodiment, the machining unit 52 mainly performs grinding, and the machining unit 52 includes a grinding disc for grinding.

[0036] Reference Figure 1 and Figure 2A cover 421 is fixed on the sliding seat 42. The cover 421 is located above the sliding seat 42. The drive unit 51 is located inside the cover 421. A clearance opening 4211 is provided at one end of the cover 421 near the partition 6. The clearance opening 4211 is connected to the sliding opening 61. One end of the cover 421 hugs the partition 6 and fits snugly against the partition 6. The drive unit 51 passes through the clearance opening 4211 and the sliding opening 61 in sequence and extends into the processing chamber 13.

[0037] In the actual machining process, the eccentric shaft is fixed by the clamping mechanism 3. The second driving component 411 drives the lead screw 412 to rotate. Through the threaded engagement between the lead screw 412 and the sliding seat 42, and the hydrostatic guide rail 4, the driving part 51 and the machining part 52 move along the XY axis towards the clamping mechanism 3, bringing the machining part 52 close to the eccentric shaft. When the machining part 52 approaches the eccentric shaft, the driving part 51 drives the machining part 52 to machine the eccentric shaft. After machining is completed, the driving part 51 drives the machining part 52 to stop rotating. The second driving component 411, through the engagement between the lead screw 412 and the sliding seat 42, drives the driving part 51 and the machining part 52 to move away from the clamping part.

[0038] Reference Figure 1 and Figure 2 A baffle 511 is fixed on the drive unit 51. The baffle 511 is located on the side of the partition 6 near the mounting part. The baffle 511 is used to cover the sliding port 61. The cross-sectional area of ​​the baffle 511 in the vertical direction is larger than that of the sliding port 61. The projection of the processing head in the direction parallel to the distribution of the drive chamber 14 and the processing chamber 13 is located inside the baffle 511. During the movement of the drive unit 51, the baffle 511 always covers the sliding port 61 to reduce the amount of cooling water in the processing chamber 13 entering the drive chamber 14.

[0039] Reference Figure 3 and Figure 4 A drainage channel 62 is provided on the partition 6, which is located on the side of the partition 6 near the drive chamber 14 and below the sliding port 61. The drainage channel 62 is used to collect the coolant flowing into the drive chamber 14 from the gap between the partition 6 and the baffle 511. A water outlet 63 is provided on the partition 6, which connects the drainage channel 62 and the processing chamber 13. The coolant flowing into the drainage channel 62 flows into the processing chamber 13 from the water outlet. A drain port 15 is provided on the mounting base 11, which is located in the processing chamber 13. The drain port 15 is used to discharge the coolant and debris in the processing chamber 13. A guide surface 111 is formed on the upper end surface of the mounting base 11. The guide surface 111 is located in the processing chamber 13 and is located on both sides of the drain port 15. The guide surface 111 is inclined downward towards the drain port 15 to improve the discharge efficiency of waste and coolant in the processing chamber 13.

[0040] Reference Figure 4A baffle plate 121 is threaded onto the frame 12. The baffle plate 121 is located on the side of the partition 6 near the processing chamber 13. There is a flow gap 122 between the baffle plate 121 and the partition 6. The projection of the baffle plate 121 in the direction near the partition 6 covers the water outlet 63, which helps to reduce the amount of cooling water splashed in the processing chamber 13 from entering the drive chamber 14 from the water outlet 63, and helps to keep the drive chamber 14 dry.

[0041] The implementation principle of the eccentric shaft machining follower grinding machine in this application embodiment is as follows: During the actual machining process, the cooling device sprays cooling water onto the workpiece to cool it down. The cooling water splashing towards the drive chamber 14 is difficult to enter the drive chamber 14 from the sliding port 61 due to the obstruction of the baffle 511 and the partition 6. If the cooling water adhering to the surface of the partition 6 enters the drive chamber 14 from the sliding port 61 through the gap between the baffle 511 and the partition 6, the cooling water entering the drive chamber 14 flows downward into the drainage channel 62 and flows to the machining chamber 13 through the outlet 63. This reduces the impact of the cooling water on the hydrostatic guide rail 4, which is beneficial to improving the service life of the hydrostatic guide rail 4, improving the sliding accuracy of the hydrostatic guide rail 4, and thus improving the machining accuracy of the follower grinding machine.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A follower grinding machine for machining eccentric shafts, characterized in that: The machine includes a bed (1), a cooling device on the bed (1), a clamping mechanism (3) on the bed (1), a hydrostatic guide rail (4) on the bed (1), and a machining mechanism (5) on the hydrostatic guide rail (4). The hydrostatic guide rail (4) drives the machining mechanism (5) to move closer to or away from the clamping mechanism (3). The bed (1) is provided with a partition (6). The bed (1) is provided with a machining chamber (13) and a drive chamber (14). The machining chamber (13) and the drive chamber (14) are located on opposite sides of the partition (6). The hydrostatic guide rail (4) is located in the drive chamber (14). The cooling device and the clamping mechanism (3) are both located in the machining chamber (13). The machining mechanism (5) extends into the machining chamber (13).

2. The eccentric shaft machining follower grinding machine according to claim 1, characterized in that: The partition (6) has a sliding opening (61), and the processing mechanism (5) extends into the processing chamber (13) through the sliding opening (61). The processing mechanism (5) has a baffle (511), and the baffle (511) always covers the sliding opening (61) during the movement of the processing mechanism (5).

3. The eccentric shaft machining follower grinding machine according to claim 2, characterized in that: The processing mechanism (5) includes a drive unit (51) provided on the hydrostatic guide rail (4) and a processing unit (52) provided on the drive unit (51). The drive unit (51) drives the processing unit (52) to process. A cover (421) is provided on the hydrostatic guide rail (4), and the drive unit (51) is located inside the cover (421).

4. The eccentric shaft machining follower grinding machine according to claim 3, characterized in that: The projection of the processing unit (52) in the direction near the drive chamber (14) is located inside the baffle (511).

5. The eccentric shaft machining follower grinding machine according to claim 2, characterized in that: The bed (1) is provided with a drain port (15), which is located in the processing chamber (13).

6. The eccentric shaft machining follower grinding machine according to claim 5, characterized in that: The bed (1) is provided with a guide surface (111), which is inclined downward in the direction close to the drain port (15).

7. The eccentric shaft machining follower grinding machine according to claim 2, characterized in that: The partition (6) is provided with a drainage channel (62), which is located below the sliding port (61) and inside the drive chamber (14). The partition (6) is provided with a water outlet (63), which connects the drainage channel (62) and the processing chamber (13).

8. A follower grinding machine for machining eccentric shafts according to claim 7, characterized in that: The bed (1) is provided with a baffle plate (121), which is located in the processing chamber (13). A flow gap (122) is provided between the baffle plate (121) and the partition (6). The projection of the baffle plate (121) in the direction close to the partition (6) covers the water outlet (63).

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