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CN-121977802-A - Static pressure slide block performance testing device and testing method

CN121977802ACN 121977802 ACN121977802 ACN 121977802ACN-121977802-A

Abstract

The application discloses a static pressure slide block performance testing device and a testing method, according to one aspect of the application, the static pressure slide block performance testing device comprises a testing component, an oil supply component, a loading component and a detecting component, wherein the testing component comprises a testing seat and a limiting piece, at least two guide rail grooves and at least three bosses are arranged on the testing seat along a first direction, the widths of the at least two guide rail grooves are different along the first direction, the static pressure slide block is arranged in the guide rail grooves and can do linear motion along a second direction relative to the guide rail grooves, and the limiting piece is connected with the bosses; the oil supply assembly is communicated with the static pressure slide block, the loading assembly is arranged beside the test seat and is at least used for applying load force to the static pressure slide block, the detection assembly comprises a detection component and data processing equipment, the detection component is at least used for detecting performance parameters of the static pressure slide block, and the data processing equipment is electrically connected with the detection component. The application solves the problems of low testing efficiency and poor universality of the static pressure slide block.

Inventors

  • LUO XING
  • JIANG CHAO
  • LV HE
  • CHENG WENWEI
  • TANG JIAN
  • CHEN HONG
  • LIN JIAJING

Assignees

  • 中国机械总院集团海西(福建)分院有限公司

Dates

Publication Date
20260505
Application Date
20251225

Claims (15)

  1. 1. The static pressure slider performance test device is characterized by comprising: The test assembly comprises a test seat (10) and a limiting piece (20), at least two guide rail grooves (11) and at least three bosses (12) are arranged on the test seat (10) along a first direction, the guide rail grooves (11) are positioned between two adjacent bosses (12), the lengths of the guide rail grooves (11) extend along a second direction, the widths of the at least two guide rail grooves (11) are different along the first direction, the static pressure sliding blocks (80) are arranged in the guide rail grooves (11) and can do linear motion along the second direction relative to the guide rail grooves (11), and the limiting piece (20) is connected with the bosses (12); An oil supply unit (30), wherein the oil supply unit (30) is communicated with the static pressure slide block (80) so as to generate an oil film between the static pressure slide block (80) and the inner wall surface of the guide rail groove (11) and the limiting piece (20); A loading assembly (40), wherein the loading assembly (40) is installed beside the test seat (10), the loading assembly (40) has a first state connected with the static pressure sliding block (80) and a second state separated from the static pressure sliding block (80), and in the first state, the loading assembly (40) is at least used for applying a loading force to the static pressure sliding block (80) and driving the static pressure sliding block (80) to do the linear motion; The detection assembly (50), the detection assembly (50) comprises a detection component and a data processing device (52), the detection component is at least used for detecting the performance parameter of the static pressure sliding block (80), and the data processing device (52) is electrically connected with the detection component.
  2. 2. The static slider performance test device according to claim 1, wherein the test socket (10) comprises an assembly area (101), a test area (102) and a disassembly area (103), the test area (102) being located between the assembly area (101) and the disassembly area (103) in a second direction, the stopper (20) being located in the test area (102), the boss (12) comprising a first section (201), a second section (202) and a third section (203) arranged in one-to-one correspondence with the assembly area (101), the test area (102) and the disassembly area (103), wherein: in a third direction, the height of the first section (201) and the third section (203) is smaller than the height of the second section (202).
  3. 3. The static slider performance test device according to claim 1, wherein the limiting member (20) comprises: a pressing plate connected to the top surface of the boss (12), the pressing plate extending at least partially beyond the edge of the boss (12) and covering the notch of the guide rail groove (11) in a first direction, and/or, The test seat (10) is also provided with: The oil return groove (104) is circumferentially arranged on the test seat (10), and the oil return groove (104) is circumferentially arranged on the outer edges of the guide rail groove (11) and the boss (12) and is communicated with the guide rail groove (11); and the oil return port (105) is arranged on the test seat (10) and is communicated with the oil return groove (104) and the oil supply assembly (30).
  4. 4. A static pressure slider performance test device according to claim 3, wherein the oil return port (105) is provided at a bottom of the oil return port (104), and a horizontal surface of a bottom surface of the oil return port (104) in a third direction is gradually lowered toward a direction approaching the oil return port (105).
  5. 5. The static slider performance test device according to any one of claims 1 to 4, wherein the loading assembly (40) comprises: The loading mechanism comprises a mounting component (41), a loading device (42) and a force transmission component (43), wherein the mounting component (41) is used for mounting the loading device (42) on the upper side of the test seat (10) along a third direction, the loading device (42) can move relative to the test seat (10) along a first direction, the force transmission component (43) is mounted between the loading device (42) and the static pressure sliding block (80), and the force transmission component (43) is used for transmitting the load force loaded by the loading device (42) to the static pressure sliding block (80); the driving mechanism (44), the driving mechanism (44) is connected with the mounting component (41), along the second direction, the driving mechanism (44) is used for driving the mounting component (41) to drive the loading device (42) and the static pressure sliding block (80) to do linear motion; And a power device electrically connected to the loading device (42), the driving mechanism (44), and the data processing device (52).
  6. 6. The static slider performance test device according to claim 5, wherein the force transfer member (43) comprises: a force application block (431), wherein the force application block (431) is connected with the output end of the loading device (42); A pressed block (432), wherein the pressed block (432) is connected with the force application block (431), a first channel (321) is arranged in the pressed block (432), when the loading assembly (40) is in the first state, one side of the pressed block (432) deviating from the force application block (431) is connected with the part of the static pressure sliding block (80) which is positioned at the limiting piece (20) in a staggered way, and the first channel (321) is communicated between the static pressure sliding block (80) and the oil supply assembly (30), The loading mechanism further includes: -a load sensor (45), said load sensor (45) being mounted between said loading device (42) and said force transfer member (43), said load sensor (45) being electrically connected to said data processing device (52).
  7. 7. The static slider performance test device according to claim 5, wherein the mounting member (41) includes: the portal frame (411), the portal frame (411) comprises a column (4111) and a beam (4112), the column (4111) is connected to two opposite sides of the beam (4112) along a first direction, and the test seat (10) is positioned between the columns (4111) on two opposite sides of the beam (4112) and below the beam (4112); The guide block (412), guide block (412) install in crossbeam (4112) be close to one side of test seat (10), the length of guide block (412) extends along first direction, loading equipment (42) through locking structure with guide block (412) are connected and accessible locking structure locks in stationary state and unblock to the mobile state, stationary state is loading equipment (42) is relative guide block (412) stationary state, mobile state is loading equipment (42) is relative guide block (412) are along the state of first direction removal.
  8. 8. The static slider performance test device of claim 7 wherein the test assembly further comprises a support table (60), the test seat (10) being mounted on the support table (60), the drive mechanism (44) comprising: The rodless cylinder (441) is arranged on two opposite sides of the test seat (10) along a first direction, the rodless cylinder (441) comprises a cylinder barrel (4411) and a sliding seat (4412), the cylinder barrel (4411) extends along a second direction, two opposite ends of the cylinder barrel (4411) are connected with the test seat (10), the sliding seat (4412) is sleeved on the cylinder barrel (4411) and can slide relative to the cylinder barrel (4411), and the upright post (4111) is connected with the sliding seat (4412); The air source component comprises a pneumatic electromagnetic valve (442) and an air source triple piece (443), and the pneumatic electromagnetic valve (442) is connected between the air source triple piece (443) and the rodless cylinder (441) and is electrically connected with the power equipment.
  9. 9. The static slider performance test device according to claim 8, wherein the drive mechanism (44) further comprises: the sliding connection component (444), the sliding connection component (444) comprises a wire rail (401) and a sliding block (402), the wire rail (401) is installed on the supporting table (60) and extends along a second direction, the wire rail (401) is located at one side, away from the test seat (10) along the first direction, of the rodless cylinder (441), the sliding block (402) is sleeved on the wire rail (401) and can slide relative to the wire rail (401), the bottom end, away from the cross beam (4112), of the upright column (4111) is connected with the sliding block (402), and/or, The force transmission component (43) comprises a pressed block (432), a first channel (321) is arranged in the pressed block (432), and the performance testing device further comprises: The drag chain (71), one end of the drag chain (71) along the length direction of the drag chain is fixedly connected with the supporting table (60), the other end of the drag chain is connected with the upright column (4111) through a switching bracket (72), the drag chain (71) is at least used for loading an oil pipe and a circuit which need to be connected with at least one of the static pressure sliding block (80) and the loading assembly (40), and the oil pipe and the circuit both comprise fixed sections which keep static relative to the static pressure sliding block (80) and the loading assembly (40); wherein, be provided with a plurality of adapter on the adapter bracket (72), the fixed section is connected in the adapter with at least one of static pressure slider (80) and loading subassembly (40).
  10. 10. The static pressure slider performance test device according to claim 1, wherein the detection means includes: The distance measuring sensors (511) comprise at least two distance measuring sensors (511), the at least two distance measuring sensors (511) are arranged at the tops of the at least two guide rail grooves (11) in a one-to-one correspondence mode and are electrically connected with the data processing equipment (52), and the projection outline of each distance measuring sensor (511) is located at the bottom of the guide rail groove (11) along the third direction, A first pressure sensor (512), said first pressure sensor (512) being mounted on the oil line between said oil supply assembly (30) and said static pressure slider (80) and being electrically connected to said data processing device (52), and/or, A flow rate temperature sensor (513), the flow rate temperature sensor (513) being mounted on the oil pipe between the oil supply assembly (30) and the static pressure slider (80) and being electrically connected to the data processing device (52), and/or, The test socket (10) comprises an assembly area (101), a test area (102) and a disassembly area (103), and the detection component further comprises: A speed sensor (514), the speed sensor (514) is mounted on the test seat (10) and is positioned on one side of the disassembly area (103) away from the test area (102), and the speed sensor (514) is electrically connected with the data processing equipment (52).
  11. 11. A static slider performance test method, characterized in that the static slider performance test method is performed using the static slider performance test apparatus according to any one of claims 1 to 10, the performance test method comprising: At least two static pressure sliding blocks (80) are correspondingly arranged on at least two guide rail grooves (11), and after a loading assembly (40) is connected with the static pressure sliding blocks (80) simultaneously or respectively, performance test is conducted on the static pressure sliding blocks (80).
  12. 12. The method of static slider performance testing according to claim 11, wherein the test socket (10) of the performance testing apparatus includes an assembly area (101), a test area (102), and a disassembly area (103), and wherein in a third direction, a height of a first section (201) and a third section (203) of the boss (12) on the test socket (10) is less than a height of a second section (202), the method further comprising: Placing the static pressure slide block (80) at the position of the guide rail groove (11) in the assembly area (101), connecting the static pressure slide block (80) with the loading assembly (40) and performing connection operation of a circuit; After the connected static pressure sliding block (80) is driven to the test area (102) through the loading assembly (40), performing the performance test; after the test is finished, the static pressure sliding block (80) is driven by the loading assembly (40) to move from the test area (102) to the detaching area (103) so as to detach the static pressure sliding block (80) in the detaching area (103).
  13. 13. The method of claim 12, wherein the static slider performance test device includes a detection component including a ranging sensor (511), the loading assembly (40) includes a force transfer component (43), the force transfer component (43) includes a pressed block (432), and the pressed block (432) has a thickness S in a third direction, and the step of performing performance test on the static slider (80) includes: before the static pressure slide block (80) enters the test area (102), detecting the distance H1 between the static pressure slide block and the bottom surface of the guide rail groove (11) by the distance measuring sensor (511), and transmitting the H1 to a data processing device (52); Detecting the distance H2 from the distance measuring sensor (511) to the pressed block (432) when the static pressure sliding block (80) is positioned in the test area (102) and the oil supply assembly (30) is not used for supplying oil to the static pressure sliding block (80), and transmitting the H2 to the data processing equipment (52); And calculating, by the data processing device (52), a height H of the static pressure slider (80) along a third direction according to H1 and H2 and a pre-acquired thickness value S, so as to determine whether the height dimension of the static pressure slider (80) is qualified according to the obtained size of H, wherein H satisfies the relation h=h1-H2-S.
  14. 14. The method of claim 13, wherein the loading force applied by the loading assembly (40) to the hydrostatic slider (80) comprises a dead load force or an excitation force, the method further comprising, when the height dimension of the hydrostatic slider (80) is acceptable: After the oil supply assembly (30) supplies oil to the static pressure sliding block (80), static load forces with different magnitudes are applied to the static pressure sliding block (80) through the loading assembly (40), so that when the oil pressure of a lower oil cavity of the static pressure sliding block (80) close to the bottom surface of the guide rail groove (11) reaches different preset values, the detected measuring distance from the static pressure sliding block to the pressure receiving block (432) is sent to a data processing device (52) through the distance measuring sensor (511); Calculating, by the data processing device (52), a clearance value of an oil film clearance between the static pressure slider (80) and the bottom surface of the guide rail groove (11) under different static load forces according to the measured distance or the measured distance and H2, to calculate a static stiffness of the oil film according to the clearance value and the magnitude of the static load force, and when the static stiffness is greater than zero and within a predetermined range, determining that the parallelism of the static pressure slider (80) is acceptable, or When the loading assembly (40) applies the exciting force to the static pressure sliding block (80), the data processing equipment (52) calculates a clearance value of an oil film clearance between the static pressure sliding block (80) and the bottom surface of the guide rail groove (11) under different exciting forces according to the measuring distance or the measuring distance and H2, calculates the dynamic stiffness of the oil film according to the clearance value and the instantaneous magnitude of the exciting force, and outputs a curve of the exciting force, the oil pressure of the lower oil cavity, the clearance value and the dynamic stiffness, wherein at least one of the curve is changed along with time or frequency.
  15. 15. The static slider performance test method according to claim 14, wherein the detection means further comprises a flow temperature sensor (513), the flow temperature sensor (513) being configured to detect a flow and a temperature of an oil inlet of the static slider (80), the method further comprising: -applying, by means of the loading assembly (40), static load forces of different magnitudes to the static pressure slider (80) after the oil supply assembly (30) supplies oil to the static pressure slider (80), so that the oil pressure of the lower oil chamber of the static pressure slider (80) reaches a first target pressure in a predetermined increment in sequence from an initial pressure, -recording, by means of the data processing device (52), the flow detected by the flow temperature sensor (513), and-calculating, by means of the data processing device (52), the static stiffness and the clearance values at different oil pressures; Outputting, by the data processing device (52), a characteristic curve of the static pressure slider (80) including at least one of a curve of an oil pressure with the flow rate, a curve of the oil pressure with the static stiffness, a curve of the clearance value with the oil pressure, a curve of the clearance value with the static stiffness, a curve of the clearance value with the flow rate, and/or, The static pressure slide block (80) is provided with a second pressure sensor, the second pressure sensor is electrically connected with the data processing equipment (52), the second pressure sensor is used for detecting the oil pressure of the lower oil cavity, and after the oil supply assembly (30) supplies oil to the static pressure slide block (80), the method further comprises: Under a specified static load force, the static pressure sliding block (80) is driven by the loading assembly (40) to do uniform linear motion at a plurality of different motion speeds, wherein the motion speeds are sequentially increased according to a preset speed increment; The trend of the oil pressure along with the flow rate under different movement speeds is recorded through the data processing equipment (52), so that when the oil pressure reaches a second target pressure, the movement speed at the moment is determined as the maximum movement speed of the static pressure sliding block (80), and the second target pressure is the pressure corresponding to the maximum flow rate.

Description

Static pressure slide block performance testing device and testing method Technical Field The application relates to the technical field of machine tools, in particular to a static pressure slide block performance testing device and a static pressure slide block performance testing method. Background The hydrostatic guideway comprises a guideway and a hydrostatic slider which is connected on the guideway in a sliding way. Hydrostatic guideway is a bearing system designed based on the principle of hydrostatic support, which can realize completely contactless bearing support in axial and radial directions. The hydrostatic guideway has the advantages of small friction, low noise, long service life and the like, and is widely applied to the field of precision machine tools. The hydrostatic guideway adopts liquid as a supporting medium, has the characteristics of strong loading capacity, high durability, good reliability and the like, and can meet the requirements of high load and long-time work. In order to detect the performance and reliability of the static pressure guide rail in practical application, performance test is required to be carried out on the static pressure slide block, the test can help to verify the quality of designing and manufacturing the static pressure slide block, ensure that the guide rail can meet expected requirements and standards, and the performance parameters tested on the static pressure slide block comprise oil inlet pressure, flow, temperature, oil film rigidity, moving speed, dynamic oil film clearance of an oil cavity, oil cavity pressure and the like. At present, the device for testing the static pressure sliding blocks is only suitable for static pressure sliding blocks with single specification and size, cannot realize batch factory testing, and has low testing efficiency and poor universality. Disclosure of Invention The application mainly aims to provide a static pressure slide block performance testing device and a static pressure slide block performance testing method, which are used for solving the problems of low testing efficiency and poor universality of the static pressure slide block in the prior art. According to an aspect of the present application, there is provided a static pressure slider performance test apparatus, comprising: the test assembly comprises a test seat and a limiting piece, at least two guide rail grooves and at least three bosses are arranged on the test seat along a first direction, the guide rail grooves are positioned between two adjacent bosses, the lengths of the guide rail grooves extend along a second direction, the widths of the at least two guide rail grooves are different along the first direction, the static pressure sliding block is arranged in the guide rail grooves and can do linear motion along the second direction relative to the guide rail grooves, and the limiting piece is connected with the bosses; the oil supply assembly is communicated with the static pressure sliding block, so that an oil film is generated between the static pressure sliding block and the inner wall surface of the guide rail groove and between the static pressure sliding block and the limiting piece; The loading assembly is arranged beside the test seat and is provided with a first state connected with the static pressure sliding block and a second state separated from the static pressure sliding block, and the loading assembly is at least used for applying a loading force to the static pressure sliding block and driving the static pressure sliding block to do the linear motion in the first state; the detection assembly comprises a detection component and data processing equipment, wherein the detection component is at least used for detecting performance parameters of the static pressure sliding block, and the data processing equipment is electrically connected with the detection component. Further, the test socket includes assembly region, test region and dismantlement region, along the second direction, the test region is located assembly region with dismantle between the region, the locating part is located the test region, along the second direction, the boss include with assembly region the test region with dismantle first section, second section and the third section that the regional one-to-one set up, wherein: In a third direction, the height of the first and third sections is less than the height of the second section. Further, the stopper includes: a pressing plate connected to the top surface of the boss, the pressing plate extending at least partially beyond the edge of the boss and covering the notch of the guide rail groove in a first direction, and/or, The test seat is also provided with: The oil return groove is circumferentially arranged on the guide rail groove and the outer edge of the boss in a surrounding manner and is communicated with the guide rail groove; The oil return port is arranged on the test seat and is communicated with