A machine tool performance tester

Abstract

The application provides a machine tool performance testing machine, and relates to the field of machine tool performance testing. The machine tool performance testing machine comprises a workbench and two guide rail seats, the two guide rail seats are fixed to the two opposite sides of the workbench, a sliding rail is arranged on the guide rail seat, a sliding plate is arranged on the sliding rail in a sliding mode, a cross beam is arranged between the two sliding plates, and a driving mechanism for driving the sliding plate to slide is arranged on the two guide rail seats; the driving mechanism comprises a screw rod transmission part and a gear transmission part, the screw rod transmission part is arranged on the guide rail seat, and the gear transmission part is arranged between the guide rail seat and the sliding plate. The application has the effect of not needing to replace a testing environment or using multiple driving devices to perform testing in turns, so that time and effort are saved.

Description

Technical Field

[0001] The present application relates to the field of machine tool performance testing, and in particular to a machine tool performance testing machine. Background Art

[0002] With the continuous development of society, many products are produced in large quantities and on a large scale. For example, the transmission chain installation process for high-speed machining and difficult-to-machine alloy materials generally requires performance testing after processing.

[0003] However, the current performance testing process generally requires multiple devices to be tested in turn, which is time-consuming and labor-intensive. Especially for data comparison or separate requirements of different drive modes such as screw drive and gear drive, it is necessary to change the test environment drive mode, which is more cumbersome. Summary of the Invention

[0004] In order to improve the problems existing in the above technologies, the present application provides a machine tool performance testing machine.

[0005] This application provides a machine tool performance testing machine, which adopts the following technical solutions:

[0006] A machine tool performance testing machine comprises: a workbench and two guide rail seats, the two guide rail seats being fixed on opposite sides of the workbench, the guide rail seats being mounted with slide rails, the slide rails being slidably mounted with slide plates, a crossbeam being provided between the two slide plates, and the two guide rail seats being provided with drive mechanisms for driving the slide plates to slide;

[0007] The driving mechanism includes: a screw transmission part and a gear transmission part. The screw transmission part is arranged on the guide rail seat, and the gear transmission part is arranged between the guide rail seat and the slide plate.

[0008] By adopting the above technical solution, during testing, the screw transmission part or the gear transmission part can be selected for driving according to the required driving mode to obtain test data, thereby eliminating the need to change the test environment or use multiple driving devices to perform testing in turn, thereby achieving an effect that does not require time and effort.

[0009] Optionally, the screw transmission part includes: a first servo motor, a screw, a nut pair and a nut seat, the guide rail seat is provided with a mounting groove, the first servo motor is installed in the mounting groove, the screw is rotatably installed in the mounting groove, and the screw is coaxially fixed with the output shaft of the first servo motor, the nut pair is threadedly sleeved on the screw, the nut seat is installed on the nut pair, and the nut seat is connected to the slide.

[0010] By adopting the technical scheme, the first servo motor on the two sides of the workbench in the width direction is matched into a pair of gantry shafts, the cross beam is removed from the two sliding plates, the first servo motor is started to drive the screw rod to rotate, thereby driving the sliding plates to move on the slide rails, and the synchronization of the gantry shafts during the screw rod transmission is verified in this state.

[0011] Optionally, the gear transmission part comprises a second servo motor, a speed reducer, a fixed rack and a rotating gear, the fixed rack is installed on the guide rail seat, the output shaft of the second servo motor is connected with the speed reducer, the speed reducer is installed on the sliding plate, and the output shaft of the speed reducer is coaxially connected with the rotating gear.

[0012] By adopting the technical scheme, the second servo motor on the two sides of the workbench in the width direction is matched into a pair of gantry shafts, the cross beam is removed from the two sliding plates, the second servo motor is started to drive the rotating gear to rotate, thereby driving the sliding plates to move on the slide rails, and the synchronization of the gantry shafts during the rotating gear transmission is verified in this state.

[0013] Optionally, a bump pad is fixedly sleeved on the screw rod.

[0014] By adopting the technical scheme, the bump pad can buffer the impact force, thereby protecting the equipment.

[0015] Optionally, a connecting assembly is arranged between the output shaft of the speed reducer and the rotating gear, the connecting assembly comprises a connecting rod and a connecting block, the connecting rod is composed of a first rod and a second rod, the first rod is fixed on the output shaft of the speed reducer, a connecting groove is formed in the first rod, the connecting block is slidingly connected in the connecting groove, the second rod is fixed with the connecting block, the rotating gear is coaxially sleeved on the second rod, and a pushing-away assembly is arranged between the second rod and the sliding plate.

[0016] By adopting the technical scheme, when the screw rod transmission part is needed, the second rod can be pushed by the pushing-away assembly, at this time, the connecting block slides from one end of the connecting groove to the other end, that is, the second rod is staggered with the first rod, thereby the rotating gear is separated from the fixed rack, so that the screw rod transmission part can be driven.

[0017] Optionally, the pushing-away assembly comprises a connecting bearing, a pushing plate and an electric push rod, the connecting bearing is fixedly sleeved on the second rod, the electric push rod is installed on the sliding plate, one end of the pushing plate is fixed with the outer ring of the connecting bearing, and the other end is fixed with the pushing shaft of the electric push rod.

[0018] By adopting the above technical solution, before testing, the electric push rod can be started to push the push plate, and the push plate will pull the second rod to move, thereby changing the second rod to be staggered or coaxial with the first rod, that is, the rotating gear is separated from or engaged with the fixed rack, so that the rotating gear can be adjusted without manually adjusting the screw.

[0019] Optionally, a fixing mechanism is provided between the nut seat and the pushing plate, the fixing mechanism includes: a fixing component, a pulling component and a transmission component, the transmission component includes: a transmission rack, a rotating shaft and a transmission gear, a clearance hole is provided on the slide, and a accommodating hole is provided on the inner wall of the clearance hole, one end of the transmission rack is fixed to the pushing plate, and the other end is slidably connected to the clearance hole, the transmission gear is rotatably installed in the accommodating hole through the rotating shaft, and the transmission gear is meshed with the transmission rack, the fixing component is provided between the nut seat and the slide, and the pulling component is provided between the fixing component and the rotating shaft.

[0020] By adopting the above technical solution, when the rotating gear is pushed to separate from the fixed rack, the transmission rack slides in the clearance hole to drive the transmission gear to rotate. The rotation of the transmission gear will drive the rotating shaft to drive the pulling component to move; the pulling component will pull the fixed component to operate, thereby automatically connecting the nut seat and the slide plate.

[0021] Optionally, the pulling assembly includes: a main pull rope and a branch pull rope, one end of the branch pull rope is connected to the fixing assembly and the other end is fixed to the main pull rope, and one end of the main pull rope is away from one end of the branch pull rope and is wound around the rotating shaft.

[0022] By adopting the above technical solution, the rotation of the rotating shaft will reel in the main pull rope, and the main pull rope will drive the branch pull ropes to pull the fixed component, thereby automatically connecting the nut seat and the slide plate.

[0023] and a lockhole that is formed on a pair of locking plates at the side of being raised and lowered to the side of being raised to the collision avoidance, and a lockhole that is formed on the locking shank is formed on the side of being raised to the collision avoidance.

[0024] By adopting the above technical solution, the pull rope is loosened on the screw to pull the screw to rotate. The rotation of the screw will drive the locking rod to insert into the fixing hole, thereby completing the connection between the nut seat and the slide, so that the slide can slide when the screw rotates.

[0025] Optionally, an anti-slip groove is provided on the rotating shaft, and one end of the main pull rope away from the branch pull rope is wound in the anti-slip groove.

[0026] By adopting the above technical solution, the anti-slip groove can prevent the main pull rope from interfering with the transmission gear.

[0027] In summary, this application has at least one of the following beneficial effects:

[0028] 1. During the test, you can select the screw drive unit or the gear drive unit according to the required drive mode to obtain the test data, so there is no need to change the test environment or use multiple drive devices to test in turn, so as to achieve the effect of saving time and effort.

[0029] 2. Loosen the pull rope on the screw to pull the screw to rotate. The rotation of the screw will drive the locking rod to insert into the fixing hole, thereby completing the connection between the nut seat and the slide, so that the slide can slide when the screw rotates.

[0030] 3. The anti-slip groove can prevent the main pull rope from interfering with the transmission gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a structural diagram according to the first embodiment of the present application;

[0032] Figure 2 This is a schematic structural diagram according to the second embodiment of the present application;

[0033] Figure 3 It is along Figure 2 A schematic cross-sectional view taken along the cutting line AA in FIG.

[0034] Figure 4 yes Figure 3 A schematic partial enlarged view of part B;

[0035] Figure 5 yes Figure 2 A schematic top view of

[0036] Figure 6 It is along Figure 5 A schematic cross-sectional view taken along the cutting line CC in FIG.

[0037] Figure 7 It is along Figure 5 A schematic cross-sectional view taken along the cutting line DD in FIG.

[0038] Figure 8 yes Figure 6 A schematic partial enlarged view of part E in the middle;

[0039] Figure 9 yes Figure 7 Schematic partial enlarged view of part F.

[0040] In the figure: 1. Workbench; 11. Guide rail seat; 111. Slide rail; 112. Mounting slot; 12. Crossbeam; 2. Slide plate; 21. Clearance hole; 22. Accommodation hole; 23. First hole; 24. Second hole; 241. Limiting slot; 3. Screw transmission unit; 31. First servo motor; 32. Screw; 321. Anti-collision pad; 33. Nut pair; 34. Nut seat; 341. Fixing hole; 4. Gear transmission unit; 41. Second servo motor; 42. Reducer; 43. Fixed rack; 44. Rotating gear; 5. Connecting assembly; 51. Connecting rod ;511, first rod; 5111, connecting groove; 512, second rod; 52, connecting block; 6, push-off assembly; 61, connecting bearing; 62, push plate; 63, electric push rod; 7, transmission assembly; 71, transmission rack; 72, rotating shaft; 721, anti-slip groove; 73, transmission gear; 8, pulling assembly; 81, main pull rope; 82, sub-pull rope; 9, fixing assembly; 91, fixing plate; 911, through hole; 912, accommodating groove; 92, screw; 93, locking rod; 931, threaded hole; 94, limit block; 95, coil spring. DETAILED DESCRIPTION

[0041] An embodiment of the present application provides a machine tool performance testing machine.

[0042] Example 1:

[0043] See also Figure 1 A machine tool performance testing machine can generally comprise a workbench 1 and two guide rail seats 11 mounted on both sides of the workbench 1 along the width direction, the top of the guide rail seat 11 is provided with a sliding rail 111 along the length direction, and a sliding plate 2 is slidingly arranged on the sliding rail 111; a cross beam 12 is arranged between the two sliding plates 2.

[0044] Referring to Figure 1 The two guide rail seats 11 are provided with a driving mechanism for driving the sliding plate 2 to slide along the length direction of the sliding rail 111, the driving mechanism comprises a screw rod transmission part 3 and a gear transmission part 4, the screw rod transmission part 3 is arranged on the guide rail seat 11, and the gear transmission part 4 is arranged between the guide rail seat 11 and the sliding plate 2. For the transmission chain installation process of high-speed machining and difficult-to-machine alloy materials, after the machining is completed, the screw rod transmission part 3 or the gear transmission part 4 can be selected for driving according to the required driving mode to obtain test data, so that it is not necessary to replace the test environment or use multiple driving devices to test in turn, thereby achieving the effect of saving time and effort.

[0045] Referring to Figure 1 The screw rod transmission part 3 comprises a first servo motor 31, a lead screw 32, a nut pair 33 and a nut seat 34, the top of the guide rail seat 11 is provided with a mounting groove 112 along the length direction, the first servo motor 31 is fixedly installed at one end of the mounting groove 112 along the length direction, the lead screw 32 is rotationally installed in the mounting groove 112 and is arranged horizontally, and one end of the lead screw 32 close to the first servo motor 31 is coaxially fixed with the output shaft of the first servo motor 31.

[0046] Referring to Figure 1 The nut pair 33 is threadedly sleeved on the lead screw 32, and the nut seat 34 is fixedly installed on the nut pair 33. In a conventional case, the nut seat 34 is generally fixed with the sliding plate 2 by bolts. If the gear transmission part 4 needs to be driven, the bolts are removed so that the nut seat 34 is separated from the sliding plate 2.

[0047] During testing, the first servo motors 31 on both sides of the workbench 1 along the width direction are matched into a pair of gantry shafts, and the cross beam 12 is removed from the two sliding plates 2. In this state, the synchronism of the gantry shafts during transmission of the lead screw 32 is verified. In this state, the sliding plates 2 are respectively subjected to laser interferometry, and the pitch error compensation is respectively performed;

[0048] Finally, the cross beam 12 is arranged between the two sliding plates 2 for rigid connection, and the laser interferometry is used to verify and compare the positioning accuracy error, the repeat positioning accuracy error and the reverse gap error of the left, middle and right three different positions of the cross beam 12, and the measurement results are counted for subsequent analysis, so as to complete the testing.

[0049] Referring to Figure 1Further, the anti-collision pad 321 is arranged on one end of the screw rod 32 close to the first servo motor 31, and is made of rubber or other materials in the embodiment of the application. When the nut seat 34 moves to the end close to the first servo motor 31, if the first servo motor 31 is not turned off in time, the nut seat 34 will collide with the anti-collision pad 321, so that the anti-collision pad 321 can buffer the impact force.

[0050] Referring to Figure 1 The gear transmission part 4 comprises a second servo motor 41, a speed reducer 42, a fixed rack 43 and a rotating gear 44. The fixed rack 43 is fixedly installed on the guide rail seat 11 away from the workbench 1, and is arranged along the length direction of the guide rail seat 11. The speed reducer 42 is fixedly installed on the slide plate 2 by screws. In the embodiment of the application, two speed reducers 42 are arranged on one slide plate 2. The output shaft of the second servo motor 41 is connected with the speed reducer 42. The rotating gear 44 is coaxially connected with the output shaft of the speed reducer 42.

[0051] During testing, if the gear transmission part 4 is needed to be used, the nut seat 34 can be separated from the slide plate 2, and then the screws are adjusted to make the rotating gear 44 mesh with the fixed rack 43. Then the two second servo motors 41 on the two sides of the workbench 1 along the width direction are arranged as a pair of gantry shafts, and the cross beam 12 is removed from the two slide plates 2. In this state, the synchronization of the gantry shafts when the rotating gear 44 is driven is verified. The slide plates 2 are respectively marked by laser interferometers, and the pitch error compensation is respectively performed.

[0052] Finally, the cross beam 12 is arranged between the two slide plates 2 for rigid connection, and the left, middle and right positions of the cross beam 12 are respectively verified by the laser interferometer to compare the positioning accuracy error, the repeat positioning accuracy error and the reverse gap error. The measurement results are counted for subsequent analysis, so as to complete the test.

[0053] Compared with the prior art, the testing machine can switch the screw transmission part 3 and the gear transmission part 4 at any time to complete the test, so that the test environment does not need to be changed or a plurality of driving devices are used to test in turn, thereby achieving the effect of saving time and effort.

[0054] The working principle of the embodiment one is as follows: during testing, the two first servo motors 31 on the two sides of the workbench 1 along the width direction are arranged as a pair of gantry shafts, and the cross beam 12 is removed from the two slide plates 2. In this state, the synchronization of the gantry shafts when the screw rod 32 is driven is verified. The slide plates 2 are respectively marked by laser interferometers, and the pitch error compensation is respectively performed. Finally, the cross beam 12 is arranged between the two slide plates 2 for rigid connection, and the left, middle and right positions of the cross beam 12 are respectively verified by the laser interferometer to compare the positioning accuracy error, the repeat positioning accuracy error and the reverse gap error. The measurement results are counted for subsequent analysis, so as to complete the test.

[0055] Example 2:

[0056] See also Figure 2 、 Figure 3 and Figure 4 The difference between this embodiment and the first embodiment is that a connecting assembly 5 is provided between the output shaft of the reducer 42 and the rotating gear 44. The connecting assembly 5 includes: a connecting rod 51 and a connecting block 52. In the embodiment of the present application, the connecting rod 51 is composed of a first rod 511 and a second rod 512. The first rod 511 is coaxially fixed with the output shaft of the reducer 42, and the second rod 512 is located below the first rod 511.

[0057] See also Figure 4 The bottom wall of the first rod 511 is radially provided with a connecting groove 5111, and the connecting block 52 is slidably connected to the connecting groove 5111 and slides along the length direction of the connecting groove 5111. The second rod 512 is fixed to the bottom wall of the connecting block 52, and the rotating gear 44 is coaxially sleeved on the second rod 512.

[0058] See also Figure 4 A push-off assembly 6 is provided between the second rod 512 and the slide 2. When the screw transmission part 3 is needed, the second rod 512 can be pushed by the push-off assembly 6; at this time, the connecting block 52 will slide from one end of the connecting groove 5111 to the other end, that is, the second rod 512 is staggered with the first rod 511, thereby separating the rotating gear 44 from the fixed rack 43 so that the screw transmission part 3 can be driven; if the gear transmission part 4 needs to be driven, the nut seat 34 is first separated from the slide 2, and then the push-off assembly 6 is used to restore the connecting block 52 to its initial position, that is, the second rod 512 is coaxial with the first rod 511, so that the rotating gear 44 is engaged with the fixed rack 43 for driving.

[0059] See also Figure 4 The push-off assembly 6 includes: a connecting bearing 61, a pushing plate 62 and an electric push rod 63. The connecting bearing 61 is fixedly mounted on the second rod 512. The connecting bearing 61 is not likely to affect the second rod 512 from rotating along with the first rod 511. The pushing plate 62 is fixed to the outer ring of the connecting bearing 61. In the embodiment of the present application, one pushing plate 62 is shared between the two second rods 512 on a single skateboard 2. The electric push rod 63 is fixedly mounted on the top of the skateboard 2, and the pushing shaft of the electric push rod 63 is fixedly connected to the pushing plate 62. Before testing, the electric push rod 63 can be started to push the pushing plate 62. The pushing plate 62 will pull the second rod 512 to move, thereby changing whether the second rod 512 is staggered or coaxial with the first rod 511, that is, the rotating gear 44 is separated or engaged with the fixed rack 43, so that the rotating gear 44 can be adjusted without manually adjusting the screw.

[0060] See also Figure 5 、 Figure 6 and Figure 7 A fixing mechanism is provided between the nut seat 34 and the push plate 62, and the fixing mechanism is used to fix or separate the nut seat 34 and the slide plate 2. The fixing mechanism includes: a fixing component 9, a pulling component 8 and a transmission component 7.

[0061] See also Figure 8 The transmission assembly 7 includes a transmission rack 71, a rotating shaft 72, and a transmission gear 73. A clearance hole 21 is defined on the side of the slide 2 near the fixed rack 43. One end of the transmission rack 71 is fixed to the side wall of the push plate 62, and the other end is slidably connected within the clearance hole 21. An accommodating hole 22 is defined within the inner sidewall of the clearance hole 21. The transmission gear 73 is rotatably mounted within the accommodating hole 22 via the rotating shaft 72, which is vertically disposed. The transmission gear 73 meshes with the transmission rack 71.

[0062] See also Figure 8 and Figure 9 The pulling assembly 8 includes a main pull rope 81 and branch pull ropes 82. In this embodiment, the number of branch pull ropes 82 in a set of fixing mechanisms matches the number of fixing assemblies 9, with two sets of fixing assemblies 9 being provided. One end of the branch pull rope 82 is connected to the fixing assembly 9, and the other end is fixedly connected to the main pull rope 81. The end of the main pull rope 81, away from the branch pull ropes 82, passes through the accommodating hole 22 and is wound around the rotating shaft 72.

[0063] See also Figure 8 Furthermore, an anti-slip groove 721 is opened on the side wall of the rotating shaft 72 along the circumferential direction, and the end of the main pull rope 81 away from the branch pull rope 82 is wound in the anti-slip groove 721. The anti-slip groove 721 can prevent the main pull rope 81 from interfering with the transmission gear 73.

[0064] See also Figure 9 The fixing assembly 9 includes a fixing plate 91, a screw 92, a locking rod 93, a limit block 94, and a coil spring 95. The top wall of the slide 2 is provided with a first hole 23, and a second hole 24 is provided through the bottom of the first hole 23. The diameter of the first hole 23 is larger than that of the second hole 24. The top wall of the nut seat 34 is provided with a fixing hole 341. In the embodiment of the present application, there are two fixing holes 341 in a single nut seat 34 and two first holes 23 and second holes 24 in a single slide 2, and they correspond one to one.

[0065] See also Figure 9 The fixing plate 91 is fixed in the first hole 23, and a through-hole 911 is formed through the top wall of the fixing plate 91. The inner wall of the through-hole 911 defines an annular receiving groove 912. One end of the locking rod 93 is disposed in the fixing hole 341, and the other end is disposed in the second hole 24. The top wall of the locking rod 93 defines a threaded hole 931. One end of the screw rod 92 is rotatably mounted in the first hole 23, and the other end penetrates the through-hole 911 and is threadedly connected to the threaded hole 931.

[0066] Referring to Figure 9 , the inner wall of the second hole 24 is provided with a limiting groove 241 in the vertical direction, a limiting block 94 is slidingly connected in the limiting groove 241, and one end of the limiting block 94 is fixed with the locking rod 93 in the second hole 24. The limiting block 94 can limit the locking rod 93, so that the locking rod 93 is not easy to rotate together with the screw rod 92.

[0067] Referring to Figure 9 , the coil spring 95 is sleeved on the screw rod 92 and arranged in the accommodating groove 912. One end of the coil spring 95 is fixed with the inner wall of the accommodating groove 912, and the other end is fixed with the screw rod 92. When the coil spring 95 recovers the deformation, the screw rod 92 can be driven to rotate. One end of the sub-pull rope 82 away from the main pull rope 81 penetrates into the first hole 23 and is fixedly connected with the screw rod 92.

[0068] When the rotating gear 44 is separated from the fixed rack 43, the transmission rack 71 slides in the let-in hole 21 to drive the transmission gear 73 to rotate. The rotation of the transmission gear 73 drives the rotating shaft 72 to wind the main pull rope 81, and the main pull rope 81 drives the sub-pull rope 82 to be loosened on the screw rod 92 to drive the screw rod 92 to rotate. The rotation of the screw rod 92 drives the locking rod 93 to insert into the fixed hole 341, so that the connection of the nut seat 34 and the sliding plate 2 is completed. When the screw rod 32 rotates, the sliding plate 2 can slide without the operation of connecting the nut seat 34 and the sliding plate 2 after the rotating gear 44 is separated from the fixed rack 43.

[0069] Conversely, when the rotating gear 44 is engaged with the fixed rack 43, the coil spring 95 releases the elastic force to drive the screw rod 92 to rotate reversely, so that the locking rod 93 is withdrawn from the fixed hole 341 to the second hole 24, so that the connection of the nut seat 34 and the sliding plate 2 is released, so that the rotating gear 44 and the fixed rack 43 are not easy to be continuously engaged. Compared with the first embodiment, the nut seat 34 can be automatically connected with the sliding plate 2 when the rotating gear 44 is separated from the fixed rack 43, and the nut seat 34 can be automatically separated from the sliding plate 2 when the rotating gear 44 is engaged with the fixed rack 43, so that the operation is not step by step, so that the time is saved.

[0070] The working principle of the second embodiment is as follows: before testing, the electric push rod 63 can be started to push the push plate 62, the push plate 62 pulls the second rod 512 to move, so that the second rod 512 and the first rod 511 are staggered or coaxial, that is, the rotating gear 44 is separated from or engaged with the fixed rack 43, so that the rotating gear 44 is adjusted without manually adjusting the screw.

[0071] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A machine tool performance testing machine, characterized in that: include: A workbench (1) and two guide rail seats (11), wherein the two guide rail seats (11) are fixed on opposite sides of the workbench (1), a slide rail (111) is installed on the guide rail seat (11), a slide plate (2) is slidably arranged on the slide rail (111), and a crossbeam (12) is arranged between the two slide plates (2), and a driving mechanism for driving the slide plates (2) to slide is provided on the two guide rail seats (11); The driving mechanism comprises: a screw transmission part (3) and a gear transmission part (4), wherein the screw transmission part (3) is arranged on the guide rail seat (11), and the gear transmission part (4) is arranged between the guide rail seat (11) and the slide plate (2); A connecting assembly (5) is provided between the output shaft of the reducer (42) and the rotating gear (44), the connecting assembly (5) comprising: a connecting rod (51) and a connecting block (52), the connecting rod (51) consisting of a first rod (511) and a second rod (512), the first rod (511) being fixed to the output shaft of the reducer (42), and a connecting groove (5111) being provided on the first rod (511), the connecting block (52) being slidably connected in the connecting groove (5111), the second rod (512) being fixed to the connecting block (52), the rotating gear (44) being coaxially sleeved on the second rod (512), and a pushing assembly (6) being provided between the second rod (512) and the slide plate (2); The push-off assembly (6) comprises: a connecting bearing (61), a pushing plate (62) and an electric push rod (63); the connecting bearing (61) is fixedly sleeved on the second rod (512); the electric push rod (63) is mounted on the slide plate (2); one end of the pushing plate (62) is fixed to the outer ring of the connecting bearing (61), and the other end is fixed to the pushing shaft of the electric push rod (63); A fixing mechanism is provided between the nut seat (34) and the pushing plate (62), and the fixing mechanism includes: a fixing assembly (9), a pulling assembly (8) and a transmission assembly (7), and the transmission assembly (7) includes: a transmission rack (71), a rotating shaft (72) and a transmission gear (73). A clearance hole (21) is provided on the slide plate (2), and an accommodating hole (22) is provided on the inner wall of the clearance hole (21). One end of the transmission rack (71) is fixed to the pushing plate (62), and the other end is slidably connected to the clearance hole (21). The transmission gear (73) is rotatably installed in the accommodating hole (22) through the rotating shaft (72), and the transmission gear (73) is meshed with the transmission rack (71). The fixing assembly (9) is provided between the nut seat (34) and the slide plate (2), and the pulling assembly (8) is provided between the fixing assembly (9) and the rotating shaft (72); The pulling assembly (8) includes: a main pull rope (81) and a branch pull rope (82), one end of the branch pull rope (82) is connected to the fixing assembly (9), and the other end is fixed to the main pull rope (81), and one end of the main pull rope (81) is away from one end of the branch pull rope (82) and is wound around the rotating shaft (72); The fixing assembly (9) includes: a fixing plate (91), a screw (92), a locking rod (93), a limiting block (94) and a coil spring (95); a first hole (23) is provided on the slide plate (2); a second hole (24) is provided through the bottom of the first hole (23); a limiting groove (241) is provided on the inner wall of the second hole (24); a fixing hole (341) is provided on the nut seat (34); the fixing plate (91) is fixed in the first hole (23); a through hole (911) is provided through the fixing plate (91); and a receiving groove (912) is provided on the inner wall of the through hole (911); one end of the locking rod (93) is provided in the second hole (24) , the other end is arranged in the fixing hole (341), a threaded hole (931) is opened on the locking rod (93), one end of the screw rod (92) is rotatably installed in the first hole (23), the other end is penetrated by the penetration hole (911) and is threadedly connected to the threaded hole (931), the limit block (94) is slidably connected in the limit groove (241) and is fixed to the locking rod (93), the coil spring (95) is sleeved on the screw rod (92) and is located in the accommodating groove (912), and one end of the coil spring (95) is fixed to the inner wall of the accommodating groove (912), and the other end is fixed to the screw rod (92), and one end of the sub-pull rope (82) away from the main pull rope (81) is fixed to the screw rod (92).

2. The machine tool performance testing machine according to claim 1, characterized in that: The screw transmission part (3) comprises: a first servo motor (31), a screw (32), a nut pair (33) and a nut seat (34); a mounting groove (112) is provided on the guide rail seat (11); the first servo motor (31) is mounted in the mounting groove (112); the screw (32) is rotatably mounted in the mounting groove (112); the screw (32) is coaxially fixed with the output shaft of the first servo motor (31); the nut pair (33) is threadedly sleeved on the screw (32); the nut seat (34) is mounted on the nut pair (33); and the nut seat (34) is connected to the slide plate (2).

3. The machine tool performance testing machine according to claim 2, characterized in that: The gear transmission part (4) comprises: a second servo motor (41), a reducer (42), a fixed rack (43) and a rotating gear (44); the fixed rack (43) is mounted on the guide rail seat (11); the output shaft of the second servo motor (41) is connected to the reducer (42); the reducer (42) is mounted on the slide (2); and the output shaft of the reducer (42) is coaxially connected to the rotating gear (44).

4. The machine tool performance testing machine according to claim 2, characterized in that: The upper fixing sleeve of the lead screw (32) is provided with an anti-collision pad (321).

5. The machine tool performance testing machine according to claim 1, characterized in that: An anti-slip groove (721) is provided on the rotating shaft (72), and one end of the main pull rope (81) away from the branch pull rope (82) is wound in the anti-slip groove (721).

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