GB2586431A - A spring structure for machine tool - Google Patents

A spring structure for machine tool Download PDF

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Publication number
GB2586431A
GB2586431A GB2019643.2A GB202019643A GB2586431A GB 2586431 A GB2586431 A GB 2586431A GB 202019643 A GB202019643 A GB 202019643A GB 2586431 A GB2586431 A GB 2586431A
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GB
United Kingdom
Prior art keywords
gas cylinder
seal plate
annular
wall
machine tool
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Granted
Application number
GB2019643.2A
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GB2586431B (en
GB202019643D0 (en
Inventor
Chen Wuyi
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Hangzhou Zhikai Digital Technology Co Ltd
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Hangzhou Zhikai Digital Technology Co Ltd
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Publication of GB202019643D0 publication Critical patent/GB202019643D0/en
Publication of GB2586431A publication Critical patent/GB2586431A/en
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Publication of GB2586431B publication Critical patent/GB2586431B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
    • F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F16F15/0232—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means with at least one gas spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/046—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means using combinations of springs of different kinds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • F16F9/0218—Mono-tubular units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
    • F16F9/435—Filling or drainage arrangements, e.g. for supply of gas via opening in cylinder wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/43—Filling or drainage arrangements, e.g. for supply of gas
    • F16F9/437—Drainage arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/023—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means
    • F16F15/027—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using fluid means comprising control arrangements

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Machine Tool Units (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

A spring structure for machine tool is provided. The spring structure comprises: a top panel 1; a bottom panel 2; compressed springs 3 arranged between the top panel 1 and the bottom panel 2; a gas cylinder 4 arranged between the compressed springs 3 including a connecting rod 5. An annular securing shoulder 4a extends inwards from a lower inner wall of the gas cylinder 4 and is formed integrally with the gas cylinder 4. The annular securing shoulder 4a divides an inner cavity of the gas cylinder 4 into an upper chamber 4b and a lower chamber 4c. A seal plate 7 is arranged in the upper chamber 4b so as to seal off the chamber, there also being a conduit 10 and a telescopic spring 8 which biases the seal plate 7 away from the shoulder 4a. An air vent inlet 4d is in communication with the upper chamber 4b through a side wall of the gas cylinder 4 to provide a supply of gas, there being an air outlet 2a in the bottom panel 2.

Description

A SPRING STRUCTURE FOR MACHINNE TOOL
TECHNICAL FIELD
[0001] The present invention belongs to the technical field of mechanical engineering, relating to a kind of machine tool accessories, in particular to a spring structure for machine tool.
BACKGROUND OF THE INVENTION
[0002] Spring is a mechanical parts that works with its elasticity, the parts made of elastic materials will deform under the external forces, it will get back into shape after remove the external forces [0003] As a compression spring(application No. :201620912062.4) disclosed by China Patent Database, the existing spring comprises spring bodies, an end surface fixing panel arranged on two end surfaces of the spring bodies, wherein the spring bodies are a pair of cylindrical hollow spirals, and the fixing panel is a disc panel with snap that fixing two of spirals of the spring bodies, and the snap is arranged on outer side of the spring bodies along the direction paralleled to the center axis of the spring bodies.
[0004] The above-stated compression spring can realize a buffer effect through two of the spring bodies. However, due to the buffer scale of the spring bodies is unchanged, so the buffer accuracy is poor, which can not meet the requirements under the circumstance of high-precision operation situation.
BRIEF SUMMARY OF THE INVENTION
[0005] The technical problem to be solved by the invention is to provide a spring structure for machine tool so as to overcome the above-mentioned problems existing in the prior art, the technical problem is how to improve the buffer precision.
[0006] The purpose of the present invention is achieved by the following technical schemes: a spring structure for machine tool comprises a top panel and a bottom panel, wherein compressed springs are vertically arranged between the top panel and the bottom panel, and the compressed springs have two and the positions are set side by side, and a gas cylinder is vertically arranged between two of the compressed springs, wherein a bottom end of the gas cylinder is sealed and fixedly connected with the bottom panel, wherein a connecting rod is vertically arranged in the gas cylinder, and an upper end of the connecting rod stretches out of the gas cylinder and fixedly connected with the top panel, and a sealing space is formed between a lower end wall of the connecting rod and inner walls of the gas cylinder, and an annular securing shoulder is arranged on lower inner wall of the gas cylinder and can be formed integrally with the gas cylinder, and whereby annular securing shoulder can divide an inner cavity of the gas cylinder into an upper chamber and a lower chamber, wherein a seal plate is horizontally arranged in the upper chamber, and an outer diameter of the seal plate is less than an inner diameter of the upper chamber, and the seal plate is slidably connected with the gas cylinder, and the seal plate is abutted against the annular securing shoulder and sealing an upper end opening of the annular securing shoulder, wherein a telescopic spring for opening the upper end opening of the annular securing shoulder and driving the seal plate to move upward is arranged in the lower chamber, and an air vent communicated with the upper chamber is penetrated through a side wall of the gas cylinder, wherein a gas nozzle communicated with the air vent is fixedly arranged on the outer wall of the air cylinder, and outlet holes communicated with the lower chamber is penetrated through the bottom panel.
[0007] The usage of the present invention is as follows: when in a initial state, the seal plate is able to move upward to open the upper end opening of the annular securing shoulder a under an action of the telescopic spring; when in use, the compressed gas is pumped into the upper chamber through the gas nozzle, arid then under the action of an air pressure, the seal plate overcomes the elasticity of the telescopic spring to move downward gradually until seal the upper end opening of the annular securing opening, and then the compressed gas will be stop to be pumped into until the air pressure in the upper chamber reaches a designated value, when in work, the upper panel synchronously overcomes the elasticity of two of the compressed springs and the pressure of the compressed gas to achieve a buffering; when the compressed gas in the gas cylinder is not performing a buffering function, the compressed gas is discharged from the gas cylinder through the gas nozzle, at this time, the seal plate moves upward to reopen the upper end opening of the annular securing shoulder under the action of the telescopic spring, so that a sliding of the connecting rod is not blocked.
[0008] Among the above-stated spring structure for machine tool, wherein an outer side wall of the connecting rod and the inner side walls of the gas cylinder are mutually matched cylindrical surface and rest against one another for ensuring a fluidity and stability of the connecting rod when sliding.
[0009] Among the above-stated spring structure for machine tool, wherein an annular groove is defined on the outer side wall of the connecting rod, and a seal ring is arranged in the annular groove, wherein an outer side wall of the sealing ring is abutted against the inner walls of the gas cylinder, whereby a reliable sealing effect can be formed between the connecting rod and the gas cylinder.
[0010] Among the above-stated spring structure for machine tool, wherein a locating groove on annular shape is defined on a bottom wall of the seal plate, and an annular gasket is fixedly in locating groove, wherein a top wall of the annular gasket is abutted against a bottom wall of the locating groove; whereby when the seal plate is pressing against the annular securing shoulder, a bottom wall of the annular gasket can press tightly on a top wall of the annular securing shoulder to enhance the sealing effect of an upper end opening of the annular securing shoulder.
[0011] Among the above-stated spring structure for machine tool, wherein a guide column is vertically and fixedly arranged on a top wall of the bottom panel, and a conduit is sleeved on the guide column, wherein an upper end of the conduit penetrates through the annular securing shoulder and is fixedly connected with the seal plate, and the telescopic spring is sleeved on the conduit, wherein two ends of the telescopic spring are abutted against the seal plate and the bottom panel respectively.
[0012] Among the above-stated spring structure for machine tool, wherein the air vent in bar-shaped is obliquely arranged, and an upper end opening and a lower end opening of the air vent are located on an outer side wall and an inner side wall of one side of the gas cylinder, and the lower end opening of the air vent is facing to a top wall of the seal plate; whereby the seal plate 7 can easily overcome an elasticity of the telescopic spring 8 to move downward to improving an operation efficiency and conveniences.
[0013] Among the above-stated spring structure for machine tool, wherein an inlet part on pipe shape arranged on one outer side wall of the gas cylinder and can be formed integrally with the gas cylinder, wherein an upper end opening of the air vent is communicated with the inlet part, and the gas nozzle comprises an outlet part on pipe shape, wherein the outlet part is in threaded connection within the inlet part [0014] Compared with the existing technology, the advantages of the variable spring assembly in this invention are listed as follows: 1. A buffering assembly is composed of the gas cylinder, the seal plate, the telescopic spring, the gas nozzle and outlet holes, such arrangement can precisely change the buffering effect of a whole spring structure by adjusting the air pressure in the gas cylinder, which can not only improve the buffering precision, but also make this spring structure meet every kinds of working conditions for improving a practicability; 2. The connecting rod is not only compressing the compressed gas in a gas cylinder to realize the buffering, but also perform a better buffering effect to a whole buffering operation, which has a double effect; furthermore, this variable spring assembly is simple in structure and convenient to install.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] FIG.1 is the schematic diagram depicting a spring structure when air chamber has compressed air; [0016] FIG.2 is the enlarged structural diagram of "A" in FIG.1; [0017] FIG.3 is the schematic diagram depicting a spring structure when air chamber has no compressed air; [0018] In the figures, a top panel 1, a bottom panel 2, outlet holes 2a, compressed springs 3, a gas cylinder 4, an annular securing shoulder 4a, an upper chamber 4b, a lower chamber 4c, an air vent 4d, an inlet part 4e, a connecting rod 5, a seal ring 6, a seal plate 7, a telescopic spring 8, a guide column 9, a conduit 10, an annular gasket 11 and a gas nozzle 12
DETAILED DESCRIPTION OF THE INVENTION
[0019] The technical scheme of the invention is further described by the embodiments of the invention not limiting the scope and spirit of the invention in combination with accompanying figures.
[0020] Referring to FIG. 1, a spring structure for machine tool comprises a top panel 1 and a bottom panel 2, compressed springs 3 are vertically arranged between the top panel 1 and the bottom panel 2, wherein the compressed springs 3 have two and the positions are set side by side; whereby in this embodiment, two ends of the preferred compressed springs 3 are fixedly and respectively connected with the top panel 1 and the bottom panel 2 by welding [0021] Specifically, a gas cylinder 4 is vertically arranged between two of the compressed springs 3, wherein a bottom end of the gas cylinder 4 is sealed and fixedly connected with the bottom panel 2, and the preferred gas cylinder 4 and the bottom panel 2 are sealed and fixedly connected with each other by welding, wherein a connecting rod 5 is vertically arranged in the gas cylinder 4, and an upper end of the connecting rod 5 stretches out of the gas cylinder 4 and fixedly connected with the top panel 1, and a sealing space is formed between a lower end wall of the connecting rod 5 and inner walls of the gas cylinder 4; in this embodiment, an outer side wall of the connecting rod 5 and the inner side walls of the gas cylinder 4 are mutually matched cylindrical surface and rest against one another for ensuring a fluidity and stability of the connecting rod 5 when sliding; an annular groove is defined on the outer side wall of the connecting rod 5, wherein the annular groove is disposed in axial alignment with the connecting rod 5, and a seal ring 6 is arranged in the annular groove, wherein an outer side wall of the sealing ring 6 is abutted against the inner walls of the gas cylinder 4, whereby a reliable sealing effect can be formed between the connecting rod 5 and the gas cylinder 4.
[0022] An annular securing shoulder 4a is arranged on lower inner wall of the gas cylinder 4 and can be formed integrally with the gas cylinder 4, wherein the annular securing shoulder 4a is disposed in axial alignment with the gas cylinder 4, and the annular securing shoulder 4a can divide an inner cavity of the gas cylinder 4 into an upper chamber 4b and a lower chamber 4c, wherein a seal plate 7 is horizontally arranged in the upper chamber 4b, and the preferred seal plate 7 is disposed in axial alignment with the gas cylinder 4, and an outer diameter of the seal plate 7 is less than an inner diameter of the upper chamber 4b; at the same time, a annular interval is formed between side walls of the seal plate 7 and the inner side walls of the gas cylinder 4, and the seal plate 7 is slidably connected with the gas cylinder 4, and the seal plate 7 is abutted against the annular securing shoulder 4a and sealing an upper end opening of the annular securing shoulder 4a, and a telescopic spring 8 for opening the upper end opening of the annular securing shoulder 4a and driving the seal plate 7 to move upward is arranged in the lower chamber 4c; specifically, a guide column 9 is vertically and fixedly arranged on a top wall of the bottom panel 2, wherein the preferred guide column 9 is fixedly connected with the bottom panel 2 by welding; a conduit 10 is sleeved on the guide column 9, wherein an upper end of the conduit 10 penetrates through the annular securing shoulder 4a and is fixedly connected with the seal plate 7, and the telescopic spring 8 is sleeved on the conduit 10, wherein two ends of the telescopic spring 8 are abutted against the seal plate 7 and the bottom panel 2 respectively, and a locating groove on annular shape is defined on a bottom wall of the seal plate 7, and an annular gasket 11 is fixedly in locating groove, wherein a top wall of the annular gasket 11 is abutted against a bottom wall of the locating groove; whereby when the seal plate 7 is pressing against the annular securing shoulder 4a, a bottom wall of the annular gasket 11 can press tightly on a top wall of the annular securing shoulder 4a to enhance the sealing effect of an upper end opening of the annular securing shoulder 4a.
[0023] Referring to FIG. 1 and FIG. 2, an air vent 4d communicated with the upper chamber 4b is penetrated through a side wall of the gas cylinder 4, wherein a gas nozzle 12 communicated with the air vent 4d is fixedly arranged on the outer wall of the air cylinder 4, and outlet holes 2a communicated with the lower chamber 4c is penetrated through the bottom panel 2, and the outlet holes 2a have at least two; for a further explanation, the air vent 4d in bar-shaped is obliquely arranged, and an upper end opening and a lower end opening of the air vent 4d are located on an outer side wall and an inner side wall of one side of the gas cylinder 4, and the lower end opening of the air vent 4d is facing to a top wall of the seal plate 7, whereby the seal plate 7 can easily overcome an elasticity of the telescopic spring 8 to move downward to improving an operation efficiency and conveniences; an inlet part 4e on pipe shape arranged on one outer side wall of the gas cylinder 4 and can be formed integrally with the gas cylinder 4, wherein an upper end opening of the air vent 4d is communicated with the inlet part 4e, and the gas nozzle 12 comprises an outlet part on pipe shape, wherein the outlet part is in threaded connection within the inlet part 4e.
[0024] The usage of the present invention is as follows: as is shown in FIG. 3, when in a initial state, the seal plate 7 is able to move upward to open the upper end opening of the annular securing shoulder 4a under an action of the telescopic spring 8; as is shown in FIG. 1, when in use, the compressed gas is pumped into the upper chamber 4b through the gas nozzle 12, and then under the action of an air pressure, the seal plate 7 overcomes the elasticity of the telescopic spring 8 to move downward gradually until seal the upper end opening of the annular securing opening, and then the compressed gas will be stop to be pumped into until the air pressure in the upper chamber 4b reaches a designated value; when in work, the upper panel 1 synchronously overcomes the elasticity of two of the compressed springs 3 and the pressure of the compressed gas to achieve a buffering; as is shown in FIG. 3, when the compressed gas in the gas cylinder 4 is not performing a buffering function, the compressed gas is discharged from the gas cylinder 4 through the gas nozzle 12, at this time, the seal plate 7 moves upward to reopen the upper end opening of the annular securing shoulder 4a under the action of the telescopic spring, so that a sliding of the connecting rod 5 is not blocked.
[0025] The specific embodiments stated herein are only given to illustrate the spirit of the invention. It will be understood by those skilled in the relevant arts that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims

Claims (7)

  1. Claims A spring structure for machine tool comprising: a top panel; a bottom panel, compressed springs vertically arranged between the top panel and the bottom panel, wherein the compressed springs have two and the positions are set side by side; a gas cylinder vertically arranged between two of the compressed springs, wherein a bottom end of the gas cylinder is sealed and fixedly connected with the bottom panel, wherein a connecting rod is vertically arranged in the gas cylinder, and an upper end of the connecting rod stretches out of the gas cylinder and fixedly connected with the top panel, and a sealing space is formed between a lower end wall of the connecting rod and inner walls of the gas cylinder, an annular securing shoulder arranged on lower inner wall of the gas cylinder and can be formed integrally with the gas cylinder; whereby annular securing shoulder can divide an inner cavity of the gas cylinder into an upper chamber and a lower chamber, wherein a seal plate is horizontally arranged in the upper chamber, and an outer diameter of the seal plate is less than an inner diameter of the upper chamber, and the seal plate is slidably connected with the gas cylinder, and the seal plate is abutted against the annular securing shoulder and sealing an upper end opening of the annular securing shoulder, wherein a telescopic spring for opening the upper end opening of the annular securing shoulder and driving the seal plate to move upward is arranged in the lower chamber, and an air vent communicated with the upper chamber is penetrated through a side wall of the gas cylinder, wherein a gas nozzle communicated with the air vent is fixedly arranged on the outer wall of the air cylinder, and outlet holes communicated with the lower chamber is penetrated through the bottom panel.
  2. 2 The spring structure for machine tool defined in claim 1, wherein an outer side wall of the connecting rod and the inner side walls of the gas cylinder are mutually matched cylindrical surface and rest against one another.
  3. 3. The spring structure for machine tool defined in claim 2, wherein an annular groove is defined on the outer side wall of the connecting rod, a seal ring arranged in the annular groove, wherein an outer side wall of the sealing ring is abutted against the inner walls of the gas cylinder.
  4. 4. The spring structure for machine tool defined in claim 1, wherein a locating groove on annular shape is defined on a bottom wall of the seal plate; an annular gasket fixedly in locating groove, wherein a top wall of the annular gasket is abutted against a bottom wall of the locating groove; whereby when the seal plate is pressing against the annular securing shoulder, a bottom wall of the annular gasket can press tightly on a top wall of the annular securing shoulder.
  5. 5. The spring structure for machine tool defined in claim 1 or 2 or 3 or 4, wherein a guide column is vertically and fixedly arranged on a top wall of the bottom panel; a conduit sleeved on the guide column, wherein an upper end of the conduit penetrates through the annular securing shoulder and is fixedly connected with the seal plate, and the telescopic spring is sleeved on the conduit, wherein two ends of the telescopic spring are abutted against the seal plate and the bottom panel respectively.
  6. 6. The spring structure for machine tool defined in claim I, wherein the air vent in bar-shaped is obliquely arranged, and an upper end opening and a lower end opening of the air vent are located on an outer side wall and an inner side wall of one side of the gas cylinder, and the lower end opening of the air vent is facing to a top wall of the seal plate
  7. 7. The spring structure for machine tool defined in claim 6, wherein an inlet part on pipe shape arranged on one outer side wall of the gas cylinder and can be formed integrally with the gas cylinder, wherein an upper end opening of the air vent is communicated with the inlet part, and the gas nozzle comprises an outlet part on pipe shape, wherein the outlet part is in threaded connection within the inlet part.
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CN201911231058.6A CN111022557B (en) 2019-12-05 2019-12-05 Spring structure for machine tool
JP2020126964A JP6814368B1 (en) 2019-12-05 2020-07-28 Spring structure for machine tools

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CN111022568A (en) * 2019-12-09 2020-04-17 曹玉生 Machine tool seat with vibration damping and buffering mechanism

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CN106695438A (en) * 2016-12-08 2017-05-24 无锡市彩云机械设备有限公司 Lathe for machining metal products
CN207315972U (en) * 2017-06-04 2018-05-04 杜伟钗 A kind of damping device for lathe
CN209146217U (en) * 2018-10-26 2019-07-23 新昌县东茗乡宝昱机械厂 Damping base is used in a kind of processing of mechanical equipment
CN111022568A (en) * 2019-12-09 2020-04-17 曹玉生 Machine tool seat with vibration damping and buffering mechanism

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CN111022557B (en) 2021-07-09
GB2586431B (en) 2021-05-05
CN111022557A (en) 2020-04-17
GB202019643D0 (en) 2021-01-27
JP2021088051A (en) 2021-06-10
JP6814368B1 (en) 2021-01-20

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