An electric spindle testing device

Abstract

The utility model discloses an electric spindle testing device, which belongs to the field of test benches. The electric spindle testing device is connected to the end of a support plate through a threaded rod and a tension spring, so that the support plate is in a flexibly connected state, which can meet the multi-directional offset jitter of the dynamic balance imbalance when the electric spindle body is started, so that the accuracy after the dynamic balance test is higher. At the same time, because the threaded rod is connected to the annular bracket part through an internal threaded hole, the depth of one end of the threaded rod into the inside of the annular bracket part can be adjusted, and then the tightness of the tension spring can be adjusted, which is beneficial to controlling the jitter amplitude of the support plate and is convenient for use.

Description

Technical Field

[0001] The utility model relates to the field of test benches, and more specifically to an electric spindle testing device. Background Art

[0002] The electric spindle is mainly composed of a spindle, bearings, motors, sensors, cooling systems and other parts. It is widely used in various CNC machine tools, such as machining centers, milling machines, lathes, etc. It can improve the machining accuracy and efficiency of machine tools and reduce machining time and costs.

[0003] After searching, it was found that the dynamic balancing test device of the electric spindle with the Chinese patent authorization publication number of CN202020514904.7, the test device of the utility model includes a mounting unit, the test device is arranged on the test platform with the aid of the mounting unit, the mounting unit includes: a mounting plate, the electric spindle to be tested is arranged on the mounting plate, so that the electric spindle to be tested completes the dynamic balancing test; and a moving assembly, the moving assembly is connected to the mounting plate, the mounting plate can slide relative to the test platform through the moving assembly, so that during the dynamic balancing test, the electric spindle to be tested fixed on the mounting plate is allowed to slide relative to the test platform through the moving assembly to generate a displacement suitable for the dynamic balancing test. The utility model can obtain more accurate dynamic balancing test results of the electric spindle by slidably arranging the electric spindle on the test platform.

[0004] Based on the above discovery by the applicant, although the above electric spindle is installed on a base plate, when the electric spindle is started, if the electric spindle is unbalanced, it can drive the base plate to move, thereby reflecting the unbalanced state of the electric spindle. However, since the bottom of the base plate is slidably connected by a slider and a track unit, that is to say, the base plate can only move back and forth in a directional manner along the track unit and cannot move in multiple directions, it is not conducive to the detection of the accuracy of the balance of the electric spindle. Therefore, we proposed an electric spindle testing device to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide an electric spindle testing device, which is connected to the end of a support plate by a threaded rod and a tension spring, so that the support plate is in a flexibly connected state, which can meet the multi-directional offset jitter of the dynamic balance imbalance when the electric spindle body is started, so that the accuracy after the dynamic balance test is higher; at the same time, since the threaded rod is connected to the annular bracket part through the internal threaded hole, the depth of one end of the threaded rod into the interior of the annular bracket part can be adjusted, and then the tension of the tension spring can be adjusted, which is beneficial to control the jitter amplitude of the support plate and is convenient to use.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] An electric spindle testing device comprises two support mechanisms with the same structure, wherein the support mechanisms comprise an annular support portion and a T-shaped support portion, wherein the annular support portion and the T-shaped support portion are fixedly welded, and the T-shaped support portions of the two support mechanisms are fixedly welded via a connecting rod, a support plate is arranged between the annular support portions of the two support mechanisms, and an electric spindle body is arranged on the top of the support plate;

[0010] A number of internal threaded holes are symmetrically provided on the annular bracket part, and a threaded rod is threadedly connected to the inner part of the internal threaded hole, an adjusting knob is fixedly installed on one end of the threaded rod, and a ring seat is rotatably connected to the other end of the threaded rod, and two hook rings are fixedly welded on both sides of the support plate located inside the annular bracket part, and the hook ring is connected to the corresponding ring seat through a tension spring.

[0011] Furthermore, two buckle ring assemblies with the same structure are provided on the support plate, and the buckle ring assembly includes a lower holding ring fixedly mounted on the top of the support plate, an upper holding ring is provided on the top of the lower holding ring, an annular structure is formed between the lower holding ring and the upper holding ring, and the electric spindle body is sleeved between the lower holding ring and the upper holding ring.

[0012] Furthermore, the lower holding ring and one end of the upper holding ring are rotatably connected via a set of connecting plates and a pin shaft, and the other ends of the lower holding ring and the upper holding ring are both provided with a pressure opening, and the two pressure openings are connected via a locking bolt.

[0013] Furthermore, the inner walls of the lower holding ring and the upper holding ring are both provided with slots, and supporting rubber strips are clamped inside the slots. The inner walls of the lower holding ring and the upper holding ring are in contact with the outer wall of the electric spindle body through the corresponding supporting rubber strips.

[0014] Furthermore, the lengths of the tension springs at several hook ring positions are all equal.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] (1) This solution connects the end of the support plate through a threaded rod and a tension spring, so that the support plate is in a flexibly connected state, which can meet the multi-directional offset jitter of the dynamic balance imbalance when the electric spindle body is started, so that the accuracy after the dynamic balance test is higher;

[0018] (2) In this solution, since the threaded rod is connected to the annular bracket part through the internal threaded hole, the depth of one end of the threaded rod into the interior of the annular bracket part can be adjusted, thereby adjusting the tension of the tension spring, which is beneficial to controlling the shaking amplitude of the support plate and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the installation of the electric spindle body of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the support mechanism structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the threaded rod structure of the utility model.

[0023] Description of the numbers in the figure:

[0024] 1. Bracket mechanism; 2. Ring bracket part; 201. Internal threaded hole; 3. T-shaped bracket part; 4. Threaded rod; 5. Adjusting knob; 6. Ring seat; 7. Tension spring; 8. Connecting rod; 9. Support plate; 901. Hook ring; 10. Electric spindle body; 11. Retaining ring assembly; 1101. Lower holding ring; 1102. Upper holding ring; 1103. Connecting piece; 1104. Locking bolt. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention specification; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0026] Embodiment 1:

[0027] See also Figure 1 and Figure 2 , an electric spindle testing device, comprising two support mechanisms 1 of the same structure, the support mechanism 1 comprising an annular support portion 2 and a T-shaped support portion 3, the annular support portion 2 and the T-shaped support portion 3 are fixedly welded, and the T-shaped support portions 3 of the two support mechanisms 1 are fixedly welded through a connecting rod 8, a support plate 9 is arranged between the annular support portions 2 of the two support mechanisms 1, and an electric spindle body 10 is arranged on the top of the support plate 9;

[0028] Four internal threaded holes 201 are symmetrically provided on the annular bracket portion 2, and a threaded rod 4 is threadedly connected to the internal threaded holes 201. An adjusting knob 5 is fixedly installed on one end of the threaded rod 4, and a ring seat 6 is rotatably connected to the other end of the threaded rod 4. Two hook rings 901 are fixedly welded on both sides of the support plate 9 inside the annular bracket portion 2, and the hook ring 901 is connected to the corresponding ring seat 6 through a tension spring 7.

[0029] The operating principle of this electric spindle testing device is:

[0030] First, the electric spindle body 10 is fixedly installed on the support plate 9 through the buckle assembly 11, and then each adjusting knob 5 can be rotated to drive the corresponding threaded rod 4 to rotate, so as to adjust the tension of each tension spring 7 on the support plate 9. It should be noted that during the adjustment process, the depth of one end of the ring seat 6 of all the threaded rods 4 extending to the inside of the annular bracket part 2 should be adjusted to be equal to ensure that each tension spring 7 applies the same tension. After the adjustment is completed, the power supply of the electric spindle body 10 can be turned on to rotate the spindle inside the electric spindle body 10. At this time, the shaking and jumping of the support plate 9 can be observed during the process. If the frequency of shaking and jumping of the support plate 9 is large, it means that the dynamic balancing performance of the electric spindle body 10 is not good and further inspection or maintenance is required. If the frequency of shaking and jumping of the support plate 9 is small or even does not jump, it means that the dynamic balancing performance of the electric spindle body 10 is good and meets the requirements of good products.

[0031] Embodiment 2:

[0032] In view of the above embodiment 1, for further description, refer to Figure 2-Figure 4 Two buckle ring assemblies 11 with the same structure are arranged on the support plate 9, and the buckle ring assembly 11 comprises a lower holding ring 1101 fixedly mounted on the top of the support plate 9, and an upper holding ring 1102 is arranged on the top of the lower holding ring 1101, and an annular structure is formed between the lower holding ring 1101 and the upper holding ring 1102, and the electric spindle body 10 is sleeved between the lower holding ring 1101 and the upper holding ring 1102, and a group of connecting pieces 1103 and The pin shaft is rotatably connected, and a pressure hole is provided on the other end of the lower holding ring 1101 and the upper holding ring 1102, and the two pressure holes are connected by a locking bolt 1104. The inner walls of the lower holding ring 1101 and the upper holding ring 1102 are provided with a groove, and a supporting rubber strip is clamped inside the groove. The inner walls of the lower holding ring 1101 and the upper holding ring 1102 are in contact with the outer wall of the electric spindle body 10 through the corresponding supporting rubber strips, and the lengths of the tension springs 7 located at the positions of several hook rings 901 are all equal.

[0033] By setting the retaining ring assembly 11, it is convenient to open the upper holding ring 1102 by directly loosening the locking bolt 1104 during use, thereby facilitating the disassembly and assembly of the electric spindle body 10 and improving the convenience of disassembly and assembly of the electric spindle body 10. The supporting rubber strip can increase the contact area and improve the stability of the installation contact surface, and can also achieve flexible contact to avoid damage to the contact part of the electric spindle body 10 caused by hard contact.

[0034] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An electric spindle testing device, comprising two support mechanisms (1) of identical structure, characterized in that: The support mechanism (1) comprises an annular support portion (2) and a T-shaped support portion (3); the annular support portion (2) and the T-shaped support portion (3) are fixedly welded, and the T-shaped support portions (3) of the two support mechanisms (1) are fixedly welded via a connecting rod (8); a support plate (9) is provided between the annular support portions (2) of the two support mechanisms (1), and an electric spindle body (10) is provided on the top of the support plate (9); The annular bracket portion (2) is symmetrically provided with four internal threaded holes (201), and the internal threaded holes (201) are threadedly connected to a threaded rod (4), one end of the threaded rod (4) is fixedly mounted with an adjusting knob (5), and the other end of the threaded rod (4) is rotatably connected to a ring seat (6), and two hook rings (901) are fixedly welded on both sides of the support plate (9) located inside the annular bracket portion (2), and the hook rings (901) are connected to the corresponding ring seats (6) via tension springs (7).

2. The electric spindle testing device according to claim 1, characterized in that: Two buckle ring assemblies (11) with the same structure are arranged on the support plate (9), and the buckle ring assembly (11) comprises a lower holding ring (1101) fixedly mounted on the top of the support plate (9), and an upper holding ring (1102) is arranged on the top of the lower holding ring (1101), and an annular structure is formed between the lower holding ring (1101) and the upper holding ring (1102), and the electric spindle body (10) is sleeved between the lower holding ring (1101) and the upper holding ring (1102).

3. The electric spindle testing device according to claim 2, characterized in that: The lower holding ring (1101) and one end of the upper holding ring (1102) are rotatably connected via a group of connecting plates (1103) and a pin shaft, and the other ends of the lower holding ring (1101) and the upper holding ring (1102) are both provided with a pressing opening, and the two pressing openings are connected via a locking bolt (1104).

4. The electric spindle testing device according to claim 2, characterized in that: The inner walls of the lower holding ring (1101) and the upper holding ring (1102) are both provided with slots, and supporting rubber strips are clamped inside the slots. The inner walls of the lower holding ring (1101) and the upper holding ring (1102) are in contact with the outer wall of the electric spindle body (10) through the corresponding supporting rubber strips.

5. The electric spindle testing device according to claim 1, characterized in that: The lengths of the tension springs (7) located at the positions of the plurality of hook rings (901) are all equal.

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