Rigidity testing device for motorized spindle

Abstract

The utility model discloses a motorized spindle rigidity testing device, which relates to the technical field of motorized spindle rigidity testing devices and comprises a support, one side of the support is fixedly connected with a supporting block, and the surface of the support is slidably connected with a group of first sliding blocks and a group of second sliding blocks. And a connecting plate is connected between each adjacent first sliding block and second sliding block through a rotating chain. According to the utility model, when a group of hydraulic rods drive a group of movable plates to approach synchronously, a first sliding block and a second sliding block slide under the action of the movable plates and a connecting plate, so that the positions of a first test block, a second test block and a third test block can be changed synchronously, and the test blocks can be in contact with the surface of an electric spindle; and external force is applied to the motorized spindle, so that the deformation condition of the motorized spindle under the action of the external force is measured, the rigidity performance of the motorized spindle can be evaluated, the rigidity of the motorized spindle in different directions can be tested simultaneously, the operation is simple, and the working efficiency can be improved conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric main shaft rigidity testing arrangement technical field, concretely is a kind of electric main shaft rigidity testing arrangement. BACKGROUND

[0002] Electric main shaft is the transmission structure form that machine tool main shaft and main shaft motor " combine two as one ", this structure makes main shaft component from the transmission system and overall structure of machine tool relatively independent, forms an independent " main shaft unit ", electric main shaft can realize high speed, high-precision cutting, milling, drilling etc.

[0003] In the production process of electric main shaft, electric main shaft rigidity testing arrangement is usually used to evaluate the performance of electric main shaft, and its main purpose is to measure the deformation degree of electric main shaft under stress, so as to evaluate its rigidity and stability, through testing, the rigidity and stability of electric main shaft can be known, which provides basis for adjustment and optimization of machine tool, and the potential problems of electric main shaft can be found out through testing, so that maintenance and replacement can be carried out in time, and adverse effects on machining process can be avoided.

[0004] At present, when electric main shaft rigidity is tested, the corresponding device needs to be selected first, then the electric main shaft is fixed on the testing table of the device, external force is applied to the surface of the electric main shaft and test data is recorded, so that the rigidity value of the electric main shaft can be calculated according to the test data.

[0005] However, when testing the rigidity of electric main shaft, force needs to be applied to multiple positions and directions on the surface of the electric main shaft for evaluation, so the fixed direction of the electric main shaft needs to be changed, which leads to complicated operation and reduces work efficiency. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model aims to provide an electric main shaft rigidity testing device to solve the technical problem that force needs to be applied to multiple positions and directions on the surface of the electric main shaft for evaluation, so the fixed direction of the electric main shaft needs to be changed, which leads to complicated operation and reduces work efficiency.

[0007] To achieve the above object, the utility model provides following technical scheme: a kind of electric spindle rigidity testing device, including support, the one side of the support is fixedly connected with support block, the surface of the support is slidably connected with a group of first sliding block and a group of second sliding block, rotating chain is connected with connecting plate between each adjacent first sliding block and second sliding block, and a group of first sliding block, a group of second sliding block and multiple connecting plates can form diamond structure, and one end of one first sliding block is fixedly connected with first test block by first connecting piece, and one end of another first sliding block is fixedly connected with second test block by second connecting piece, first test block is active in the bottom of support block, and second test block is active in the top of support block, the surface of each second sliding block is fixedly connected with movable plate, and each movable plate and support are connected by hydraulic rod, and the adjacent side of a group of movable plates is fixedly connected with third test block, and third test block is active and penetrates corresponding second sliding block.

[0008] By adopting the above technical scheme, when a group of movable plates are driven to approach synchronously by a group of hydraulic rods, the second sliding block can be driven to slide on the support, so that the first sliding block can slide synchronously under the action of the connecting plate, the position of the first sliding block and the second sliding block can be changed, the position of the first test block, the second test block and the third test block can be changed synchronously, the first test block, the second test block and the third test block can be in contact with the surface of the electric spindle, and an external force can be applied to the electric spindle, so that the deformation of the electric spindle under the action of the external force can be measured, the rigidity performance of the electric spindle can be evaluated, the rigidity of the electric spindle in different directions can be tested simultaneously, and the operation is simple, so that the work efficiency can be improved.

[0009] The utility model further sets up, one side of the support is provided with a group of first sliding groove, first sliding block that is in accord with the first sliding groove is slidably connected in each first sliding groove, and first sliding block is provided as '' ten '' cross structure, one side of the support is provided with a group of second sliding groove, second sliding block that is in accord with the second sliding groove is slidably connected in each second sliding groove, and one end of second sliding block is provided as '' T '' type structure.

[0010] By adopting the above technical scheme, the design of the first sliding groove and the first sliding block and the second sliding groove and the second sliding block can ensure the stability of the sliding of the first sliding block in the first sliding groove and the second sliding block in the second sliding groove, so as to improve the accuracy of the test, and by adjusting the position of the first sliding block and the second sliding block, the first test block, the second test block and the third test block can be driven to move, so as to test the rigidity of the electric spindle from multiple positions simultaneously, thereby improving the work efficiency.

[0011] The utility model further sets up, a group of first sliding groove is provided with groove body that is in accord with the first test block and second test block in the middle, and first test block and second test block are active in groove body.

[0012] By adopting the technical scheme, the groove body can limit the first test block and the second test block, so that the stability of the movement of the first test block and the second test block is increased, the first test block and the second test block can better act on the surface of the electric spindle, and the accuracy of the test result is ensured.

[0013] The utility model further sets up, the surface of support block is provided with the clamping groove, the clamping groove is slidably connected with the clamping block that unifies with the clamping groove, a group of bolts are connected on one side of the clamping groove, and the surface of the clamping block is contacted with the one end of the bolt.

[0014] By adopting the technical scheme, the position of the clamping block in the clamping groove can be adjusted according to the actual size of the electric spindle, so that the electric spindle can be limited by the clamping block, the electric spindle can be prevented from falling from the top of the support block and affecting the stiffness test, the versatility, flexibility and reliability of the test device can be improved, and after the position of the clamping block is determined, the bolt is screwed to fix the clamping block by extruding the clamping block.

[0015] The utility model further sets up, the surface of support block is provided with the clamping groove that unifies with the second test block.

[0016] By adopting the technical scheme, when one of the first sliders drives the second test block to move upward, the second test block is contacted with the outer surface of the electric spindle through the groove, so that the stiffness of the electric spindle is tested.

[0017] The utility model further sets up, the first test block and second test block adjacent one side all are provided with force sensor, a group of third test block adjacent one side all are provided with force sensor, the surface of support is provided with display screen.

[0018] By adopting the technical scheme, the force sensor is arranged to allow real-time monitoring of the force value change when the first test block, the second test block and the third test block are contacted with the surface of the electric spindle, so that the force applied by the first test block, the second test block and the third test block on the electric spindle can be accurately measured, the stiffness of the electric spindle can be more accurately evaluated, and the display screen can display the data measured by the force sensor in real time, so that the test result can be intuitively recognized and analyzed.

[0019] The utility model further sets up, the bottom of support is provided with rubber layer, and the bottom of support is provided with hole in four corners.

[0020] By adopting the technical scheme, the rubber layer can increase the friction between the bottom of the support and the contact surface, so that the stability of the support is increased, and the fixing connector, such as expansion screw, can be installed in the hole to fix the support, which helps to better test the stiffness of the electric spindle.

[0021] In summary, the utility model mainly has the following beneficial effects:

[0022] The utility model discloses a group of hydraulic rods drive a group of movable plates to be close to simultaneously, can drive the second sliding block to slide on the support, then make the first sliding block slide synchronously under the action of the connecting plate, can change a group of first sliding blocks and a group of second sliding blocks position, then can change the position of first test block, second test block and third test block simultaneously, make it can contact with the surface of motorized spindle, and exert external force to motorized spindle, thereby measure the deformation of motorized spindle under the action of external force, can evaluate motorized spindle rigidity performance, this device realizes the rigidity test of motorized spindle in different directions simultaneously, and simple operation facilitates to improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0024] Figure 2 It is the three-dimensional structure section view of the utility model;

[0025] Figure 3 It is the three-dimensional structure detail view of the utility model;

[0026] Figure 4 It is the test device detail view of the utility model.

[0027] In the drawing: 1, support;2, rubber layer;3, hole;4, display screen;5, first sliding groove;6, first sliding block;7, second sliding groove;8, second sliding block;9, connecting plate;10, movable plate;11, hydraulic rod;12, first connecting piece;13, first test block;14, second connecting piece;15, second test block;16, third test block;17, support block;18, recess;19, clamping groove;20, clamping block;21, bolt;22, groove;23, force sensor. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model, and cannot be understood as limiting the utility model.

[0029] The embodiments of the utility model will be described below according to the overall structure of the utility model.

[0030] A kind of motorized spindle rigidity testing device, such as Figures 1-4As shown, the device comprises a support 1, a rubber layer 2 is arranged at the bottom of the support 1, which can increase the friction with the contact surface, thereby increasing the stability of the device, and the four corners of the bottom of the support 1 are provided with holes 3, so that fixing parts such as expansion screws can be installed in the holes 3, thereby realizing the fixation of the support 1, which is helpful for better stiffness testing of the motorized spindle. Meanwhile, a supporting block 17 is fixedly connected to one side of the support 1, and the motorized spindle can be placed on the top of the supporting block 17 for stiffness testing. The surface of the supporting block 17 is provided with a clamping groove 19, and a clamping block 20 matched with the clamping groove 19 is slidably connected in the clamping groove 19. The position of the clamping block 20 in the clamping groove 19 is adjusted, thereby limiting the motorized spindle placed on the top of the supporting block 17, avoiding the motorized spindle from falling off the top of the supporting block 17 and affecting the testing efficiency. A group of bolts 21 are threadedly connected to one side of the clamping groove 19, and one end of the bolt 21 is in contact with the surface of the clamping block 20. Therefore, after the position of the clamping block 20 is determined, the bolt 21 is twisted to fix the clamping block 20 by extruding the clamping block 20. This operation is simple and fast.

[0031] Then a group of first sliding blocks 6 and a group of second sliding blocks 8 are slidably connected to the surface of the support 1. A connecting plate 9 is rotatably connected between each adjacent first sliding block 6 and second sliding block 8, and the group of first sliding blocks 6, the group of second sliding blocks 8 and the plurality of connecting plates 9 can form a rhombus structure. Therefore, when an external force is applied to the device, the first sliding block 6 and the second sliding block 8 can slide on the surface of the support 1 through the connecting plate 9, thereby changing the shape of the rhombus structure.

[0032] Meanwhile, a first test block 13 is fixedly connected to one end of one of the first sliding blocks 6 through a first connecting piece 12, and a second test block 15 is fixedly connected to one end of the other first sliding block 6 through a second connecting piece 14. The first test block 13 is movable at the bottom of the supporting block 17, and the second test block 15 is movable at the top of the supporting block 17. The top and bottom surfaces of the motorized spindle are tested by the first test block 13 and the second test block 15. The surface of each second sliding block 8 is fixedly connected with an activity plate 10, and each activity plate 10 and the support 1 are connected by a hydraulic rod 11. A third test block 16 is fixedly connected to the adjacent side of the group of activity plates 10, and the third test block 16 is movably penetrated through the corresponding second sliding block 8. When the group of activity plates 10 is driven by the group of hydraulic rods 11 to move synchronously, the first sliding block 6 and the second sliding block 8 move synchronously under the action of the activity plate 10 and the connecting plate 9, thereby synchronously changing the positions of the first test block 13, the second test block 15 and the third test block 16, so that they can contact with the surface of the motorized spindle and apply an external force to the surface of the motorized spindle, thereby measuring the deformation of the motorized spindle under the action of the external force, and evaluating the stiffness performance of the motorized spindle. This device realizes the stiffness testing of the motorized spindle in different directions at the same time, and the operation is simple, which is helpful for improving the work efficiency.

[0033] The force sensor 23 is arranged on the adjacent side of the first test block 13 and the second test block 15, and a group of third test blocks 16 are arranged on the adjacent side of the force sensor 23. The arrangement of the force sensor 23 allows real-time monitoring of the force value change of the first test block 13, the second test block 15 and the third test block 16 when they are in surface contact with the electric spindle, so that the force applied by the first test block 13, the second test block 15 and the third test block 16 on the electric spindle can be accurately measured, and the stiffness of the electric spindle can be more accurately evaluated. At the same time, the display screen 4 is arranged on the surface of the support 1, so that the data measured by the force sensor 23 can be displayed in real time, which facilitates intuitive identification and analysis of the test results.

[0034] Further, a group of first sliding grooves 5 are arranged on one side of the support 1, and a first sliding block 6 matched with the first sliding groove 5 is slidably connected in each first sliding groove 5. The first sliding block 6 is arranged in a "cross" shape. A group of second sliding grooves 7 are arranged on one side of the support 1, and a second sliding block 8 matched with the second sliding groove 7 is slidably connected in each second sliding groove 7. One end of the second sliding block 8 is arranged in a "T" shape, which can increase the stability of the movement of the first sliding block 6 and the second sliding block 8 on the surface of the support 1, thereby improving the accuracy of the test. At the same time, the movement of the first sliding block 6 and the second sliding block 8 can adjust the position of the first test block 13, the second test block 15 and the third test block 16, which facilitates testing the stiffness of the electric spindle from multiple positions at the same time, thereby improving work efficiency.

[0035] At the same time, a groove 18 matched with the second test block 15 is arranged on the surface of the support block 17, so that when one of the first sliding blocks 6 drives the second test block 15 to move upward, the second test block 15 can be in surface contact with the electric spindle through the groove 18, thereby realizing the test of the stiffness of the electric spindle. Further, a groove body 22 matched with the first test block 13 and the second test block 15 is arranged in the middle of the group of first sliding grooves 5, and the first test block 13 and the second test block 15 are movable in the groove body 22. The design of the groove body 22 can limit the first test block 13 and the second test block 15, which facilitates increasing the stability of the movement of the first test block 13 and the second test block 15, thereby enabling the first test block 13 and the second test block 15 to better act on the surface of the electric spindle, which helps to ensure the accuracy of the test results.

[0036] In this embodiment, the first test block 13, the second test block 15 and the third test block 16 can be driven to move synchronously by the movement of the first sliding block 6 and the second sliding block 8, so that they are in contact with the outer surface of the electric spindle, thereby applying a test force to the surface of the electric spindle, and the stiffness of the electric spindle can be tested.

[0037] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiments without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.

Claims

1. An electric spindle rigidity testing device, comprising a support (1), one side of the support (1) is fixedly connected with a supporting block (17), characterized in that: The surface of the support (1) is slidably connected with a group of first sliding blocks (6) and a group of second sliding blocks (8), a connecting plate (9) is rotatably connected between each adjacent first sliding block (6) and second sliding block (8), and the group of first sliding blocks (6), the group of second sliding blocks (8) and the plurality of connecting plates (9) can form a diamond structure, one end of one of the first sliding blocks (6) is fixedly connected with a first test block (13) through a first connecting piece (12), and one end of the other first sliding block (6) is fixedly connected with a second test block (15) through a second connecting piece (14), the first test block (13) is movable at the bottom of a support block (17), and the second test block (15) is movable at the top of the support block (17), the surface of each second sliding block (8) is fixedly connected with a movable plate (10), and each movable plate (10) and the support (1) are connected through a hydraulic rod (11), and one side of the group of movable plates (10) is fixedly connected with a third test block (16), and the third test block (16) is movably penetrated through the corresponding second sliding block (8).

2. The electric spindle rigidity testing device of claim 1, wherein: A group of first sliding grooves (5) are arranged on one side of the support (1), a first sliding block (6) that fits the first sliding groove (5) is slidably connected in each first sliding groove (5), and the first sliding block (6) is arranged in a "cross" shape, a group of second sliding grooves (7) are arranged on one side of the support (1), a second sliding block (8) that fits the second sliding groove (7) is slidably connected in each second sliding groove (7), and one end of the second sliding block (8) is arranged in a "T" shape.

3. The electric spindle rigidity testing device of claim 2, wherein: A groove (22) that fits the first test block (13) and the second test block (15) is arranged in the middle of the group of first sliding grooves (5), and the first test block (13) and the second test block (15) are movable in the groove (22).

4. The electric spindle rigidity testing device of claim 1, wherein: A clamping groove (19) is arranged on the surface of the support block (17), a clamping block (20) that fits the clamping groove (19) is slidably connected in the clamping groove (19), a group of bolts (21) are threadedly connected on one side of the clamping groove (19), and one end of the bolt (21) is in contact with the surface of the clamping block (20).

5. The electric spindle rigidity testing device of claim 4, wherein: A groove (18) that fits the second test block (15) is arranged on the surface of the support block (17).

6. The electric spindle rigidity testing device of claim 1, wherein: A force sensor (23) is arranged on one side of the first test block (13) and the second test block (15), a force sensor (23) is arranged on one side of the group of third test blocks (16), and a display screen (4) is arranged on the surface of the support (1).

7. The electric spindle rigidity testing device of claim 1, wherein: A rubber layer (2) is arranged on the bottom of the support (1), and a hole (3) is arranged at each corner of the bottom of the support (1).

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