Vacuum drying device for long-axis workpieces

Abstract

The utility model relates to the technical field of superfinishing of long-axis workpieces, in particular to a vacuum drying device for long-axis workpieces. In order to improve the superfinishing efficiency, the vacuum drying device for the long-shaft workpieces comprises a vacuum mechanism and a vacuum pump, the vacuum mechanism comprises a vacuum chamber and a clamping driving piece, a heater is arranged in the vacuum chamber, and the vacuum pump is arranged in the vacuum chamber. Clamping through holes are formed in the side walls of the two ends of the vacuum chamber; the clamping driving piece comprises a main driving seat and a clamping tail seat, and the main driving seat and the clamping tail seat are located at the two ends of the vacuum chamber and clamp the two ends of a long shaft type workpiece to be dried; and the vacuum pump is communicated with the vacuum chamber and is used for vacuumizing the vacuum chamber. By adopting the vacuum drying device for the long-axis workpieces, the separation of super-finishing grinding essential oil and the long-axis workpieces can be quickly completed, and the super-finishing efficiency of the long-axis workpieces is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-finishing of long-axis workpieces, in particular to a vacuum drying device for long-axis workpieces. Background Art

[0002] When using a superfinishing machine to superfinish long-axis workpieces, since the long-axis workpieces are easily deformed by heat, which affects the processing effect, superfinishing grinding oil needs to be sprayed on the long-axis workpieces during the superfinishing process to cool them down.

[0003] At present, due to the high viscosity of superfinishing oil, it cannot drip quickly and separate from the long-axis workpiece, so it usually takes a long time to stand or manual assistance to allow the superfinishing oil to sublimate and separate from the long-axis workpiece. However, these treatment methods are not only time-consuming and inefficient, affecting the efficiency of superfinishing, but also causing environmental pollution in the workshop. Utility Model Content

[0004] In order to improve the efficiency of superfinishing, the utility model proposes a vacuum drying device for long-axis workpieces, which includes a vacuum mechanism and a vacuum pump. The vacuum mechanism includes a vacuum chamber and a clamping drive component. A heater is provided inside the vacuum chamber, and clamping through holes are provided on the side walls at both ends of the vacuum chamber. The clamping drive component includes a main driving seat and a clamping tail seat. The main driving seat and the clamping tail seat are located at both ends of the vacuum chamber and clamp the two ends of the long-axis workpiece to be dried. The vacuum pump is connected to the vacuum chamber and is used to evacuate the vacuum chamber.

[0005] When the long-axis workpiece vacuum drying device of the utility model is used to dry the long-axis workpiece of super-finishing, the long-axis workpiece to be dried is first placed in a vacuum chamber and the two ends of the long-axis workpiece to be dried are clamped by a clamping drive, and then the vacuum chamber is evacuated by a vacuum pump, and then the heater in the vacuum chamber is used to heat the long-axis workpiece to be dried, so that the super-finished grinding essential oil adsorbed on the long-axis workpiece to be dried due to super-finishing is heated and sublimated and separated from the long-axis workpiece. In this way, the long-axis vacuum drying device of the utility model can quickly complete the separation of the super-finished grinding essential oil and the long-axis workpiece, and improve the super-finishing efficiency of the long-axis workpiece. In addition, before the vacuum drying is completed and the long-axis workpiece is taken out, the vacuum chamber can be continuously evacuated by a vacuum pump, and the sublimated super-finished grinding essential oil is extracted from the vacuum chamber and then discharged into the atmosphere, which can avoid the super-finished grinding essential oil from polluting the environment, especially the workshop environment pollution.

[0006] Preferably, the vacuum chamber includes a buffer chamber and a drying chamber, the bottom of the buffer chamber is provided with an air extraction port connected to the vacuum pump, and the top of the buffer chamber is provided with a ventilation groove; the drying chamber is formed by docking two housings, the drying chamber is located at the top of the buffer chamber, and the bottom of the drying chamber is provided with an air outlet connected to the ventilation groove. Such a vacuum chamber is provided with a buffer chamber and a drying chamber, wherein the buffer chamber is located between the vacuum pump and the drying chamber, which can not only buffer the air extracted from the drying chamber, but also reduce the volume of the drying chamber and improve the vacuum pumping speed; the drying chamber is formed by docking two housings, which is convenient for opening and closing the drying chamber, and further facilitates the placement of long-axis workpieces, thereby improving the ultra-finishing efficiency of long-axis workpieces. Further, the heater is located in the housing, and a card slot and a ventilation hole connected to the card slot are provided on the heater. When the two housings are docked to form the drying chamber, the two heaters are docked and clamped on the side wall of the long-axis workpiece to be dried. In this way, in the vacuum drying device for long-axis workpieces of the utility model, the heaters in the two cover shells are buckled to surround the side walls of the long-axis workpiece to be dried when the two cover shells are butt-jointed to form a drying chamber. When the drying chamber is evacuated by a vacuum pump, the air in the inner cavity formed by the buckled heaters can be vented through the vent holes to ensure the vacuum degree of the drying chamber after evacuation.

[0007] Preferably, a guide rail is provided on the top of the buffer chamber, and the guide rail is located at both ends of the drying chamber, and the extension direction of the guide rail is perpendicular to the central axis of the long-axis workpiece to be dried; a slider is clamped on the guide rail, and the slider is connected to the cover shell and can slide along the guide rail. In this way, when opening and closing the buffer chamber, it is only necessary to push the slider to slide along the guide rail, which is simple and convenient to operate. Furthermore, the vacuum mechanism includes a switch bracket and a switch driver, and the switch bracket is mounted and fixed on the vacuum chamber, and the switch driver is mounted and fixed on the switch bracket and connected to the slider through an induction bracket. In this way, when opening and closing the drying chamber, the switch driver mounted and fixed on the switch bracket can be used to automatically push the slider to slide along the guide rail through the induction bracket, which is convenient for control.

[0008] Preferably, the main drive seat includes a main drive shaft, an active support and a driving top, the main drive shaft is mounted on the active support, and the driving top is connected to the driving end of the main drive shaft in a collinear manner; the clamping tailstock includes a driving tail tip, a tail tip driving member and a supporting tailstock, the driving tail tip and the tail tip driving member are mounted on the supporting tailstock, the central axis of the driving tail tip coincides with the central axis of the main drive shaft, and the driving tail tip can move back and forth along the central axis direction of the driving tail tip under the drive of the tail tip driving member. In this way, the driving tail tip can move back and forth along the central axis direction of the driving tail tip under the drive of the tail tip driving member, so that it can cooperate with the driving top in the main drive seat to clamp the long shaft workpiece to be dried, and the clamping is simple and convenient; during the drying process, the main drive shaft is used to drive the driving top to drive the long shaft workpiece to be dried to rotate, so that the super-fine grinding essential oil can be separated from the long shaft workpiece to be dried under the action of centrifugal force, further improving the removal speed of the super-fine grinding essential oil, and thus improving the super-finishing efficiency of the long shaft workpiece. Further, the clamping tailstock includes an adjustment mechanism, which includes an adjustment support and an adjustment rod, the adjustment support is away from the vacuum chamber, the positioning end of the adjustment rod is connected to the vacuum chamber, the middle part of the adjustment rod is rotatably connected to the support tailstock, the adjustment end of the adjustment rod is connected to the adjustment support, and the rotation of the adjustment rod can drive the support tailstock to move along the central axis direction of the driving tail tip. In this way, an adjustment mechanism is set in the clamping tailstock, and the adjustment mechanism can be used to drive the support tailstock to move along the central axis direction of the driving tail tip through the adjustment rod, so as to drive the driving tail tip and the tail tip driving member to move along the central axis direction of the driving tail tip with the support tailstock, thereby realizing the adjustment of the spacing between the driving tail tip and the driving top, and then vacuum drying can be performed on long-axis workpieces of different lengths, thereby expanding the scope of application of the vacuum drying device for long-axis workpieces of the utility model. Further preferably, the adjustment end of the adjustment rod is provided with an adjustment handle. In this way, when adjusting the spacing between the driving tail tip and the driving top, it is only necessary to rotate the adjustment handle, and the adjustment is simple and convenient.

[0009] Preferably, a vacuum solenoid valve is provided between the vacuum pump and the vacuum chamber. Thus, during the operation of the vacuum drying device for long-axis workpieces of the utility model, the vacuum solenoid valve can be used to cut off or connect the vacuum pipeline between the vacuum pump and the vacuum chamber as needed, and the control is simple and convenient.

[0010] Preferably, the long-axis workpiece vacuum drying device further comprises a workbench, which comprises a work bracket, a support pad and an adjustment foot, wherein the support pad is fixedly mounted on the work bracket, and the adjustment foot is fixedly mounted on the leg of the work bracket; the vacuum mechanism is fixedly mounted on the support pad. In this way, a workbench with a fixed vacuum mechanism is provided, which is convenient for operators to take and place long-axis workpieces, and the adjustment foot can be adjusted as needed to keep the support pad installed on the work bracket level, thereby expanding the installation environment of the long-axis workpiece vacuum drying device of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the first angle structure of the vacuum drying device for long-axis workpieces of the utility model when the vacuum chamber is opened;

[0012] Figure 2 This is a schematic diagram of the second angle structure of the vacuum drying device for long-axis workpieces of the utility model when the vacuum chamber is opened;

[0013] Figure 3 It is a third angle structural schematic diagram of the vacuum drying device for long-axis workpieces of the utility model when the vacuum chamber is opened. DETAILED DESCRIPTION

[0014] Next, combine Figures 1 to 3 , the long-axis workpiece vacuum drying device of the utility model is described in detail.

[0015] like Figures 1 to 3 As shown, the vacuum drying device for long-axis workpieces of the utility model comprises a vacuum mechanism, a vacuum pump 2 and a workbench, wherein the vacuum mechanism is installed and fixed on the workbench, the vacuum pump 2 is installed on the ground on the side of the workbench, and the vacuum pump 2 is connected to the vacuum mechanism to evacuate the vacuum mechanism.

[0016] like Figures 1 to 3As shown, the vacuum mechanism includes a vacuum chamber 11 and a clamping drive member (not shown in the figure). A heater 4 is provided inside the vacuum chamber 11, and clamping through holes (not shown in the figure) are provided on the side walls at both ends of the vacuum chamber 11, and the vacuum chamber 11 is connected to the vacuum pump 2. Preferably, the vacuum chamber 11 includes a buffer chamber 111 and a drying chamber (not shown in the figure), the bottom of the buffer chamber 111 is provided with an exhaust port (not shown in the figure) connected to the vacuum pump 2, and the top of the buffer chamber 111 is provided with a ventilation groove (not shown in the figure); the drying chamber is formed by docking two cover shells 1121, the drying chamber is located at the top of the buffer chamber 111, and the bottom of the drying chamber is provided with an air outlet (not shown in the figure) connected to the ventilation groove. Such a vacuum chamber 11 is provided with a buffer chamber 111 and a drying chamber, wherein the buffer chamber 111 is located between the vacuum pump 2 and the drying chamber, which can not only buffer the air extracted from the drying chamber, but also reduce the volume of the drying chamber, thereby increasing the vacuum pump 2 vacuum pumping speed; the drying chamber is formed by docking two cover shells 1121, which is convenient for opening and closing the drying chamber, thereby facilitating the placement of long-axis workpieces 5, and improving the ultra-finishing efficiency of long-axis workpieces. Preferably, the cover shell 1121 is formed by vertically connecting an end plate and a connecting plate. Such a cover shell has a simple structure, is easy to manufacture and has low cost. Preferably, the heater 4 is located in the cover shell 1121, and a card slot 41 and a vent 42 connected to the card slot 41 are provided on the heater 4. When the two cover shells 1121 are docked to form a drying chamber, the two heaters 4 are docked and clamped on the side wall of the long-axis workpiece 5 to be dried. Thus, in the vacuum drying device for long-axis workpieces of the utility model, the heaters 4 in the two housings 1121 are buckled to surround the side walls of the long-axis workpiece 5 to be dried when the two housings 1121 are docked to form a drying chamber. When the vacuum pump 2 is used to evacuate the drying chamber, the air in the inner cavity formed by the buckling of the heaters 4 can be passed through the vents 42 to ensure the vacuum degree of the drying chamber after evacuation. Preferably, a guide rail 1111 is provided on the top of the buffer chamber 111, and the guide rail 1111 is located at both ends of the drying chamber, and the extension direction of the guide rail 1111 is perpendicular to the central axis of the long-axis workpiece 5 to be dried; a slider 1112 is clamped on the guide rail 1111, and the slider 1112 is connected to the housing 1121 and can slide along the guide rail 1111. Thus, when opening and closing the drying chamber, it is only necessary to push the slider 1112 to slide along the guide rail 1111, which is simple and convenient to operate. Preferably, the outside of the vacuum chamber 11 is wrapped with an insulation layer (not shown in the figure) to improve the insulation effect of the vacuum chamber 11. In this way, when the heater 4 is used for heating and drying, the heating efficiency can be improved and the energy consumption required for heating can be reduced. In addition, when the heater 4 is used for heating, a thermocouple can be used to detect the drying temperature in the drying chamber in real time, so that the temperature in the drying chamber can be controlled by a PID temperature control method, which is simple and convenient to control.Preferably, a switch bracket (not shown in the figure) is fixedly mounted on the vacuum chamber 11, and a switch driver 13 is fixedly mounted on the switch bracket, and the switch driver 13 is connected to the slider 1112 through the induction bracket 14. In this way, when the drying chamber is switched on and off, the switch driver 13 fixedly mounted on the switch bracket can be used to automatically push the slider 1112 to slide along the guide rail 1111 through the induction bracket 14, which is convenient for control. Preferably, the switch bracket includes a rectangular plate frame 121 and a connecting block (not shown in the figure), the rectangular plate frame is connected to the top plate of the buffer chamber 111 in the vacuum chamber 11 through the connecting block, and the rectangular plate frame is provided with a clamping through hole (not shown in the figure) for the clamping driver to pass through to clamp the long shaft workpiece 5 to be dried, and the connecting block is vertically connected to the rectangular plate frame 121 at the connecting end of the rectangular plate frame 121 close to the workbench. Such a switch bracket has a simple structure, is convenient and fast to manufacture, and has low cost. Preferably, a vacuum gauge 15 is provided on the side wall of the drying chamber, and the vacuum gauge 15 can detect the vacuum degree in the drying chamber in real time. Thus, when the long-axis workpiece vacuum drying device of the utility model is used to vacuum dry the long-axis workpiece 5, the vacuum degree in the drying chamber can be detected in real time by the vacuum gauge 15, and the operation of the vacuum pump 2 can be controlled according to the detection result. Preferably, the vacuum gauge 15 can be a digital vacuum gauge. In this way, it is convenient for the operator to accurately read the vacuum degree in the drying chamber through the digital vacuum gauge.

[0017] The clamping drive member includes a main drive seat and a clamping tailstock, which are located at both ends of the vacuum chamber 11 and clamp the two ends of the long shaft workpiece 5 to be dried. The main drive seat includes a main drive shaft 611, an active support 612 and a driving top 613, the main drive shaft 611 is installed on the active support 612, the active support 612 is installed and fixed on the workbench, the driving top 613 is connected in a collinear manner with the driving end of the main drive shaft 611 facing the vacuum chamber 11, that is, the central axis of the driving top 613 coincides with the central axis of the main drive shaft 611; the clamping tailstock includes a driving tail tip 621, a tail tip driving member 622 and a supporting tailstock 623, the driving tail tip 621 and the tail tip driving member 622 are installed on the supporting tailstock 623, the central axis of the driving tail tip 621 coincides with the central axis of the main drive shaft 611, and the driving tail tip 621 can move back and forth along the central axis direction of the driving tail tip 621 under the drive of the tail tip driving member 622. In this way, the driving tail tip 621 can move back and forth along the central axis direction of the driving tail tip 621 under the drive of the tail tip driving member 622, so that it can cooperate with the driving top 613 in the main driving seat to clamp the long shaft workpiece 5 to be dried, and the clamping is simple and convenient; during the drying process, the main driving shaft 611 drives the driving top 613 to drive the long shaft workpiece 5 to be dried to rotate, so that the super-fine grinding essential oil can be separated from the long shaft workpiece 5 to be dried under the action of centrifugal force, further improving the removal speed of the super-fine grinding essential oil, and then improving the super-finishing efficiency of the long shaft workpiece 5. Preferably, a driving cylinder is used as the tail tip driving member 622. In this way, the slide cylinder is used as the tail tip driving member 622, and the drive control is simple and convenient. Preferably, the clamping tailstock includes an adjustment mechanism, which includes an adjustment rod 6241 and two adjustment supports 6242, and the two adjustment supports 6242 are located on both sides of the supporting tailstock 623, the adjustment rod 6241 is mounted on the two adjustment supports 6242, the middle part of the adjustment rod 6241 is connected to the supporting tailstock 623, and when the adjustment rod 6241 rotates around the central axis, it can drive the supporting tailstock 623 to move on the workbench along the central axis direction of the adjustment rod 6241, that is, the central axis direction of the driving tail tip 621. In this way, an adjustment mechanism is provided in the clamping tailstock, and the adjustment mechanism can be used to drive the supporting tailstock 623 to move along the central axis direction of the driving tail tip 621 through the adjustment rod 6241, so as to drive the driving tail tip 621 and the tail tip driving member 622 to move along the central axis direction of the driving tail tip 621 with the supporting tailstock 623, thereby realizing the adjustment of the spacing between the driving tail tip 621 and the driving top 613, and then vacuum drying can be performed on long-axis workpieces 5 of different lengths, thereby expanding the application scope of the vacuum drying device for long-axis workpieces of the utility model. Preferably, the adjustment rod 6241 is connected to the supporting tailstock 623 by threads, and the connection is simple and convenient.Of course, the adjusting rod 6241 can also be connected to the supporting tailstock 623 in other ways, as long as the adjusting rod 6241 can drive the supporting tailstock 623 to move along the central axis direction of the driving tail tip 621 during rotation. Preferably, the adjusting end of the adjusting rod 6241 is provided with an adjusting handle 6243. In this way, when adjusting the spacing between the driving tail tip 621 and the driving top 613, it is only necessary to rotate the adjusting handle 6243, and the adjustment is simple and convenient. Preferably, a T-screw is selected as the adjusting rod 6241. In this way, the T-screw is used as the adjusting rod 6241, which facilitates the connection of the adjusting rod 6241 with the supporting tailstock 623 and the adjusting support 6242.

[0018] The vacuum pump 2 is connected to the buffer chamber 111 in the vacuum chamber 11 through the bellows 71, and is used to evacuate the vacuum chamber 11, especially to evacuate the drying chamber in the vacuum chamber 11. Preferably, a vacuum solenoid valve 72 is provided between the vacuum pump 2 and the vacuum chamber 11. In this way, during the operation of the vacuum drying device for long-axis workpieces of the utility model, the vacuum pipeline between the vacuum pump 2 and the vacuum chamber 11 can be cut off or connected by the vacuum solenoid valve 72 as needed, and the control is simple and convenient. Preferably, a gas storage tank 73 is provided between the vacuum pump 2 and the vacuum chamber 11, and the gas storage tank 73 is located between the vacuum solenoid valve 72 and the vacuum pump 2. In this way, the gas extracted from the vacuum chamber 11 by the vacuum pump 2 can be temporarily stored in the gas storage tank 73, so as to avoid the gas in the vacuum chamber 11 being directly discharged into the environment after being extracted by the vacuum pump 2, thereby affecting the environment.

[0019] like Figures 1 to 3 As shown, the workbench includes a work support 31, a support pad 32 and an adjustment foot 33. The support pad 32 is mounted and fixed on the work support 31 and is used to install and fix the vacuum mechanism. The adjustment foot 33 is mounted and fixed on the support foot 311 of the work support 31. In this way, in the vacuum drying device for long-axis workpieces of the utility model, the vacuum mechanism is mounted and fixed on the workbench, which is convenient for operators to take and place long-axis workpieces 5, and the adjustment foot 33 can be adjusted as needed to keep the support pad 32 mounted on the work support 31 horizontal, thereby expanding the installation and use environment of the vacuum drying device for long-axis workpieces of the utility model.

[0020] like Figure 1 As shown, the utility model long-axis workpiece vacuum drying device is provided with an air source triplet 8, and the air source triplet 8 is connected to the vacuum pump 2 and the vacuum solenoid valve 72. In this way, when the utility model long-axis workpiece vacuum drying device is used to vacuum dry the long-axis workpiece to be dried, the air source triplet 8 can be used to control the vacuum pump 2 and the vacuum solenoid valve 72 to open or close, which is simple and convenient to control, and the gas extracted by the vacuum pump 2 can be filtered to prevent the gas extracted by the vacuum pump 2 from being directly discharged into the atmosphere from the vacuum chamber 11, thereby polluting the environment.

[0021] When the long-axis workpiece vacuum drying device of the utility model is used to dry the long-axis workpiece of super-finishing, the long-axis workpiece to be dried is first placed in a vacuum chamber and the two ends of the long-axis workpiece to be dried are clamped by a clamping drive, and then the vacuum chamber is evacuated by a vacuum pump, and then the heater in the vacuum chamber is used to heat the long-axis workpiece to be dried, so that the super-finished grinding essential oil adsorbed on the long-axis workpiece to be dried due to super-finishing is heated and sublimated and separated from the long-axis workpiece. In this way, the long-axis vacuum drying device of the utility model can quickly complete the separation of the super-finished grinding essential oil and the long-axis workpiece, and improve the super-finishing efficiency of the long-axis workpiece. In addition, before the vacuum drying is completed and the long-axis workpiece is taken out, the vacuum chamber can be continuously evacuated by a vacuum pump, and the sublimated super-finished grinding essential oil is extracted from the vacuum chamber and then discharged into the atmosphere, which can avoid the super-finished grinding essential oil from polluting the environment, especially the workshop environment pollution.

Claims

1. A vacuum drying device for long-axis workpieces, characterized in that: The vacuum drying device for long-axis workpieces comprises a vacuum mechanism and a vacuum pump, wherein the vacuum mechanism comprises a vacuum chamber and a clamping drive member, wherein a heater is arranged inside the vacuum chamber, and clamping through holes are arranged on the side walls at both ends of the vacuum chamber; the clamping drive member comprises a main driving seat and a clamping tail seat, wherein the main driving seat and the clamping tail seat are located at both ends of the vacuum chamber and clamp the two ends of the long-axis workpiece to be dried; and the vacuum pump is connected to the vacuum chamber and is used for evacuating the vacuum chamber.

2. The vacuum drying device for long-axis workpieces according to claim 1, characterized in that: The vacuum chamber includes a buffer chamber and a drying chamber, the bottom of the buffer chamber is provided with an exhaust port connected to the vacuum pump, and the top of the buffer chamber is provided with a ventilation groove; the drying chamber is formed by docking two cover shells, the drying chamber is located at the top of the buffer chamber, and the bottom of the drying chamber is provided with an air outlet connected to the ventilation groove.

3. The vacuum drying device for long-axis workpieces according to claim 2, characterized in that: The heater is located in the cover shell, and is provided with a slot and a vent hole connected to the slot. When the two cover shells are butt-jointed to form the drying chamber, the two heaters are butt-jointed and clamped on the side wall of the long-axis workpiece to be dried.

4. The vacuum drying device for long-axis workpieces according to claim 3, characterized in that: A guide rail is provided on the top of the buffer chamber, and the guide rail is located at both ends of the drying chamber, and the extension direction of the guide rail is perpendicular to the central axis of the long-axis workpiece to be dried; a slider is clamped on the guide rail, and the slider is connected to the cover shell and can slide along the guide rail.

5. The vacuum drying device for long-axis workpieces according to claim 4, characterized in that: The vacuum mechanism comprises a switch bracket and a switch driver. The switch bracket is mounted and fixed on the vacuum chamber. The switch driver is mounted and fixed on the switch bracket and connected to the slider via an induction bracket.

6. The vacuum drying device for long-axis workpieces according to any one of claims 1 to 5, characterized in that: The main driving seat includes a main driving shaft, an active support and a driving top, the main driving shaft is installed on the active support, and the driving top is connected to the driving end of the main driving shaft in a colinear manner; the clamping tail stock includes a driving tail tip, a tail tip driving member and a supporting tail stock, the driving tail tip and the tail tip driving member are installed on the supporting tail stock, the central axis of the driving tail tip coincides with the central axis of the main driving shaft, and the driving tail tip can move back and forth along the central axis direction of the driving tail tip under the drive of the tail tip driving member.

7. The vacuum drying device for long-axis workpieces according to claim 6, characterized in that: The clamping tailstock includes an adjustment mechanism, which includes an adjustment support and an adjustment rod. The adjustment support is away from the vacuum chamber, the positioning end of the adjustment rod is connected to the vacuum chamber, the middle part of the adjustment rod is rotatably connected to the supporting tailstock, the adjustment end of the adjustment rod is connected to the adjustment support, and the rotation of the adjustment rod can drive the supporting tailstock to move along the central axis direction of the driving tail tip.

8. The vacuum drying device for long-axis workpieces according to claim 7, characterized in that: The adjusting end of the adjusting rod is provided with an adjusting handle.

9. The vacuum drying device for long-axis workpieces according to any one of claims 1 to 5, characterized in that: A vacuum solenoid valve is arranged between the vacuum pump and the vacuum chamber.

10. The vacuum drying device for long-axis workpieces according to any one of claims 1 to 5, characterized in that: The vacuum drying device for long-axis workpieces also includes a workbench, which includes a work bracket, a support pad and an adjustment foot. The support pad is installed and fixed on the work bracket, and the adjustment foot is installed and fixed on the support foot of the work bracket; the vacuum mechanism is installed and fixed on the support pad.

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