Quick assembling structure and assembling method for ball screw module

Abstract

The invention discloses a quick assembling structure and method for a ball screw module, and relates to the technical field of ball screw modules. The device comprises a lead screw, the lead screw is movably sleeved with a nut, a spiral rolling groove is formed in the inner wall of the nut, an arc-shaped rolling groove is formed in the nut, the two ends of the arc-shaped rolling groove communicate with the two ends of the spiral rolling groove correspondingly, and the spiral rolling groove and the arc-shaped rolling groove jointly form a circulating rolling way; the spiral rolling groove, the arc-shaped rolling groove and the mounting channel are formed in the nut, the spiral rolling groove and the arc-shaped rolling groove are communicated end to end to form the circulating rolling way, and the mounting channel is obliquely formed and is communicated with one connecting point of the spiral rolling groove and the arc-shaped rolling groove. And the direction of the safety channel is adjusted, the circulating roller path is automatically filled with the gravity of the balls or automatically slides out of the circulating roller path, a screw rod or a nut does not need to be rotated to generate rotation thrust assistance, the operation mode is simple and convenient, and therefore the assembly efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of ball screw modules, and in particular to a quick assembly structure and an assembly method of a ball screw module. Background Art

[0002] The ball screw module is composed of a screw, a nut and a ball. Its function is to convert rotational motion into linear motion. This is a further extension and development of the ball screw. The important significance of this development is to change the bearing from rolling motion to sliding motion. Due to its small friction resistance, high precision, reversibility and high efficiency, the ball screw is widely used in various industrial equipment and precision instruments.

[0003] Some nuts are equipped with circulators to make the balls roll back and forth. The reciprocating rolling of the balls not only makes the movement smoother and reduces vibration and creeping, but also evenly distributes the load during the rolling cycle, reduces local wear and extends the service life of the screw and nut. Most of the existing circulators adopt two structures: external circulation duct type and internal circulation type. The external circulation type adds a duct, and the internal circulation is embedded with a mechanism on which a specially shaped channel is made to cross and connect two adjacent raceways to form a single closed reflux raceway. Both of these circulation methods make the balls no longer arranged in a single spiral, so that during the assembly process (when loading or removing the balls), the balls cannot be loaded or removed quickly and smoothly, and the screw or nut needs to be rotated to generate a spiral thrust to assist in loading or removing the balls, which makes the assembly not fast and convenient enough and the assembly efficiency is low. Therefore, the present application proposes a quick assembly structure and assembly method for a ball screw module. Summary of the invention

[0004] The purpose of the present application is to solve the problems in the above-mentioned background technology, and to provide a ball screw module quick assembly structure and assembly method.

[0005] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0006] A ball screw module quick assembly structure, comprising:

[0007] A screw rod has a nut movably mounted on it, the inner wall of the nut is provided with a spiral rolling groove, an arc-shaped rolling groove begins to be formed in the nut, two ends of the arc-shaped rolling groove are respectively connected with two ends of the spiral rolling groove, the spiral rolling groove and the arc-shaped rolling groove together form a circulating raceway, a plurality of balls are arranged for rolling in the circulating raceway, an installation channel is obliquely provided on the nut, the installation channel is connected with one of the connecting points of the spiral rolling groove and the arc-shaped rolling groove, and a sealing member for sealing the installation channel is arranged on the nut.

[0008] Furthermore, the groove width of the spiral rolling groove is smaller than the diameter of the ball.

[0009] Furthermore, the blocking member comprises a fixing plate, the fixing plate is fixed on the nut by the cooperation of bolts and screw holes, and a blocking block which is plug-fitted with the installation channel is constructed on the fixing plate.

[0010] Furthermore, the blocking block is constructed as a rectangular block, the width of the blocking block is consistent with the diameter of the ball, and the length of the blocking block is greater than the diameter of the ball.

[0011] Furthermore, one end of the blocking block close to the circulating raceway is constructed with an arc surface, and the arc surface is coplanar with the inner wall of the circulating raceway.

[0012] Furthermore, a storage cavity is provided inside the blocking block, and a seepage hole communicating with the storage cavity is provided on the arc surface.

[0013] Furthermore, a sponge is arranged in the storage cavity, and an extrusion piece for squeezing the sponge is arranged on the fixing plate.

[0014] Furthermore, the extrusion member includes an extrusion rod slidably inserted on the fixing plate, and one end of the extrusion rod is provided with an extrusion plate slidably inserted in the storage cavity.

[0015] Furthermore, an arcuate groove is provided on the nut, and the arcuate groove is correspondingly connected to the arcuate rolling groove.

[0016] An assembly method for a ball screw module quick assembly structure comprises the following steps:

[0017] S1: Installation preparation, add lubricant to the storage cavity, insert the blocking block into the installation channel, press the extrusion rod to make the extrusion plate squeeze the sponge, so that the lubricant flows from the seepage hole to the circulation raceway, the lubricant flows from the spiral rolling groove and the arc rolling groove, and then remove the blocking block;

[0018] S2: Install the balls, stand the nut upright with the installation channel facing upwards, put the balls into the installation channel one by one, and under the action of gravity, the balls slide down along the spiral rolling groove and the arc rolling groove respectively until the entire circulation raceway is filled, and then insert the blocking block into the installation channel to block it, and fix the fixing plate and the nut by the combination of bolts and screw holes;

[0019] S3: Assemble the module, put the nut on the screw, turn the knob screw or nut, and match the ball with the thread groove on the screw to complete the assembly.

[0020] The beneficial effects of this application are as follows:

[0021] 1. In the present application, a spiral rolling groove, an arc-shaped rolling groove and an installation channel are opened in the nut. The spiral rolling groove and the arc-shaped rolling groove are connected end to end to form a circulating rolling track. The installation channel is opened at an angle and is connected to one of the connecting points of the spiral rolling groove and the arc-shaped rolling groove. When loading or unloading the ball, it is only necessary to erect the screw rod and adjust the orientation of the safety channel. The ball's own gravity is used to automatically fill the circulating rolling track or automatically slide out of the circulating rolling track. There is no need to rotate the screw rod or nut to generate rotational thrust assistance, which makes the operation simple and convenient, thereby improving the assembly efficiency.

[0022] 2. In the present application, the width of the spiral groove is made smaller than the diameter of the ball so that the ball cannot escape from the nut through the groove of the spiral groove. Therefore, when loading or removing the ball, the nut does not need to be put on the screw rod, and only the nut can be loaded. At the same time, when the nut is withdrawn from the screw rod, the ball will not fall off and will not be lost, thereby further improving the convenience of loading or removing.

[0023] 3. In the present application, the blocking block is constructed as a rectangular block and one side is constructed with an arc surface coplanar with the circulating raceway, so that there is enough space during the unloading process, and the two balls will not abut against the installation channel due to the balls sliding down in the two channels at the same time, making the unloading smoother. At the same time, after the installation channel is blocked, the balls can roll more smoothly along the circulating raceway.

[0024] 4. In the present application, by opening a storage cavity, a sponge and a pressing piece in the sealing block, the circulating raceway can be lubricated in advance when loading the balls, so that the balls can be loaded more smoothly and quickly. At the same time, when the nut is running, the lubricant automatically lubricates the running balls, reducing the wear between the balls and the inner wall of the circulating raceway, thereby increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural diagram of this application;

[0026] Figure 2 It is a sectional view of the three-dimensional structure of the present application;

[0027] Figure 3 It is a partial cross-sectional view of the three-dimensional structure of the present application;

[0028] Figure 4 This is a three-dimensional structural diagram of the plugging member of this application;

[0029] Figure 5 This is another perspective three-dimensional structural diagram of the blocking member of the present application;

[0030] Figure 6 This is a sectional view of the three-dimensional structure of the plugging member of the present application;

[0031] Figure 7It is a schematic diagram of the circulating raceway of this application;

[0032] Figure 8 This is a schematic diagram of the arrangement of the balls in this application;

[0033] Figure numerals: 1. screw rod; 2. nut; 3. spiral groove; 4. arc groove; 5. ball; 6. installation channel; 7. sealing part; 8. arc surface; 9. storage chamber; 10. seepage hole; 11. sponge; 12. extrusion part; 13. arc groove; 701. fixing plate; 702. sealing block; 1201. extrusion rod; 1202. extrusion plate. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0035] like Figure 1-Figure 8 As shown, a ball screw module quick assembly structure proposed in one embodiment of the present application includes:

[0036] A screw rod 1 is movably sleeved with a nut 2. Preferably, a spiral thread groove is provided on the screw rod 1, and an annular gap is provided between the inner wall of the nut 2 and the outer wall of the screw rod 1. A spiral rolling groove 3 is provided on the inner wall of the nut 2. An arc rolling groove 4 begins to be provided in the nut 2. The two ends of the arc rolling groove 4 are respectively connected to the two ends of the spiral rolling groove 3. The spiral rolling groove 3 and the arc rolling groove 4 together form a circulating raceway. A plurality of balls 5 are arranged for rolling in the circulating raceway. When the screw rod 1 rotates or the nut 2 rotates, the balls 5 can reciprocate and roll in the circulating raceway formed by the spiral rolling groove 3 and the arc rolling groove 4. The reciprocating rolling of the balls 5 not only makes The movement is smoother, vibration and creeping are reduced. At the same time, the ball 5 evenly distributes the load during the circulating rolling process, which reduces local wear and extends the service life of the screw rod 1 and the nut 2. The nut 2 is inclined with a mounting channel 6, and the mounting channel 6 is connected to one of the connecting points of the spiral rolling groove 3 and the arc rolling groove 4. The mounting channel 6 is inclined, so that the connecting point between the mounting channel 6 and the spiral rolling groove 3 and the arc rolling groove 4 is smoother, which is convenient for the ball 5 to enter the circulating raceway from the mounting channel 6 or the ball 5 to enter the mounting channel 6 from the circulating raceway. A blocking member 7 for blocking the mounting channel 6 is provided on the nut 2, such as Figure 7As shown, the spiral rolling groove 3 and the arc rolling groove 4 are connected to form a circulating rolling track. The spiral structure of the spiral rolling groove 3 makes the two connecting points of the spiral rolling groove 3 and the arc rolling groove 4 respectively located at the two ends of the axial direction of the nut 2, and the installation channel 6 is located at one of the ends. When loading the ball 5, the nut 2 is first sleeved on the screw rod 1, and the nut 2 and the screw rod 1 are erected so that the two are in a coaxial state, and the installation channel 6 is tilted upward. When the installation channel 6 is tilted upward, the installation channel 6 is just located at the highest point of the spiral rolling groove 3 and the arc rolling groove 4. The ball 5 is put into the installation channel 6. Under the action of gravity, the ball 5 will slide freely into the spiral rolling groove 3 or the arc rolling groove 4. No matter which channel the ball 5 slides freely from, the spiral rolling groove 3 and the arc rolling groove 4 can be automatically inserted. Fill (i.e. fill the circulating raceway), when the circulating raceway is filled, the safety channel 6 is blocked by the blocking piece 7, thereby completing the assembly of the module. When disassembly is required, the nut 2 and the screw rod 1 are erected, and the safety channel 6 is tilted downward. At this time, the safety channel 6 is just at the lowest point of the circulating raceway, and the blocking of the safety channel 6 by the blocking piece 7 is released. Under the action of gravity, both the ball 5 located in the spiral rolling groove 3 and the ball 5 located in the arc rolling groove 4 will slide out of the safety channel 6 under the action of gravity. When loading and unloading the ball 5, it is only necessary to erect the screw rod 1 to adjust the direction of the safety channel 6, and there is no need to rotate the screw rod 1 or the nut 2 to generate a rotational thrust assistance, which makes the operation simple and convenient, thereby improving the assembly efficiency;

[0037] In the present scheme, a spiral rolling groove 3, an arcuate rolling groove 4 and an installation channel 6 are opened in the nut 2. The spiral rolling groove 3 and the arcuate rolling groove 4 are connected end to end to form a circulating rolling track. The installation channel 6 is opened at an angle and is connected to one of the connecting points of the spiral rolling groove 3 and the arcuate rolling groove 4. When loading or unloading the ball 5, it is only necessary to erect the screw rod 1 and adjust the orientation of the safety channel 6. The ball 5 can automatically fill the circulating rolling track or slide out of the circulating rolling track by its own gravity. There is no need to rotate the screw rod 1 or the nut 2 to generate rotational thrust assistance, which makes the operation simple and convenient, thereby improving the assembly efficiency.

[0038] like Figure 3As shown, in some embodiments, the groove width of the spiral groove 3 is smaller than the diameter of the ball 5. Preferably, the groove at this time refers to the groove of the spiral groove 3 facing the inner wall of the nut 2. The ball 5 can roll normally along the spiral groove 3, and part of the position of the ball 5 can protrude from the spiral groove 3 and roll with the thread groove on the screw rod 1. However, when the ball 5 rolls in the spiral groove 3, it cannot be separated from the spiral groove 3, so that when loading the ball 5, the nut 2 does not need to be sleeved on the screw rod 1. The ball 5 can be loaded into the nut 2 first, and then the nut 2 can be sleeved on the screw rod 1. At the same time, when removing the ball 5, the nut 2 can also be withdrawn from the screw rod 1 first, and during the withdrawal process, the ball 5 will not fall off or be lost, and finally the ball 5 can be removed from the nut 2, thereby further improving the convenience of loading or removing and improving the assembly efficiency.

[0039] like Figure 4 and Figure 5 As shown, in some embodiments, the blocking member 7 includes a fixing plate 701, which is fixed to the nut 2 by means of bolts and screw holes. The fixing plate 701 is provided with a blocking block 702 which is plugged into the installation channel 6. Preferably, the nut 2 is provided with an inclined surface, on which screw holes are provided, and the fixing plate 701 overlaps with the inclined surface. When the safety channel 6 is blocked, the blocking block 702 is plugged into the safety channel 6, and the fixing plate 701 is made to fit the inclined surface, and then the bolt thread is inserted into the screw hole, so as to fix the fixing plate 701 to the nut 2. The method of blocking or releasing the blocking is relatively simple and convenient, and only the bolt needs to be twisted, thereby improving the speed of the overall assembly.

[0040] like Figure 5 As shown, in some embodiments, the blocking block 702 is constructed as a rectangular block, and the four corners of the blocking block 702 are rounded. The width of the blocking block 702 is consistent with the diameter of the ball 5, and the length of the blocking block 702 is greater than the diameter of the ball 5. When loading the ball 5, the ball 5 inserted from the installation channel 6 can freely choose the channel (i.e., the spiral raceway 3 and the arc raceway 4), and will eventually automatically fill the entire circulation raceway. When removing and unloading the ball 5, under the action of gravity, the balls 5 in the spiral raceway 3 and the arc raceway 4 will slide down, and the balls 5 in the two raceways and close to the installation channel 6 are easy to abut (slightly shaking the nut 2 can achieve the release of the abutment). By constructing the blocking block 702 as a rectangular block with a length greater than the diameter of the ball 5 (preferably twice), there is a large enough falling space under the action of gravity, and the two will not abut each other, so that the ball 5 can slide out more smoothly, thereby further improving the unloading efficiency and thus improving practicality.

[0041] like Figure 5As shown, in some embodiments, a curved surface 8 is constructed at one end of the sealing block 702 close to the circulation raceway, and the curved surface 8 is coplanar with the inner wall of the circulation raceway. Since the installation channel 6 is opened for loading or unloading, the circulation raceway has a gap at the installation channel 6. By opening the curved surface 8 coplanar with the inner wall of the circulation raceway on the sealing block 702, when the sealing block 702 blocks the installation channel 6, the inclined surface 8 just fills the gap of the circulation raceway. The coplanarity makes the ball 5 smoother when circulating and rolling, and will not be affected by the gap to cause blockage or poor rolling, ensuring that the ball 5 can circulate smoothly, thereby improving practicality.

[0042] like Figure 5 and Figure 6 As shown, in some embodiments, a storage cavity 9 is opened inside the blocking block 702, and a seepage hole 10 connected to the storage cavity 9 is opened on the arc surface 8. By opening the seepage hole 10 in the blocking block 702 and opening the seepage hole 10 on the arc surface 8, lubricant can be added to the storage cavity 9. Before loading the ball 5, the nut 2 is first erected so that the installation channel 6 faces upward, and the blocking block 702 is inserted into the installation channel 6. The lubricant in the storage cavity 9 flows into the circulation raceway through the seepage hole 10 to lubricate the inner wall of the circulation raceway. Then the blocking block 702 is removed, and then the ball 5 is added. By lubricating the inner wall of the circulation raceway, the ball 5 can slide along the inside more smoothly, so that the ball 5 can fill the circulation raceway more smoothly, thereby further improving the convenience of assembly.

[0043] like Figure 6 As shown, in some embodiments, a sponge 11 is provided in the storage cavity 9, and an extrusion piece 12 for squeezing the sponge 11 is provided on the fixed plate 701. By providing the sponge 11 in the storage cavity 9 and utilizing the adsorption property of the sponge 11, the lubricant can slowly seep out. By providing the extrusion piece 12 for squeezing the sponge 11, when loading the ball 5, the extrusion piece 12 can be used to squeeze the sponge 11, so that a little more lubricant can be put into the circulating raceway to lubricate the ball 5, so as to facilitate smoother loading of the ball 5. After the loading of the ball 5 is completed, utilizing the adsorption property of the sponge 11, when the nut 2 is running, the lubricant is automatically and slowly supplied to the circulating raceway for lubrication of the ball 5 during circulating rolling, thereby reducing the wear between the ball 5 and the inner wall of the circulating raceway, thereby increasing the service life.

[0044] like Figure 6 As shown, in some embodiments, the extrusion member 12 includes an extrusion rod 1201 slidably inserted on the fixed plate 701, and one end of the extrusion rod 1201 is provided with an extrusion plate 1202 slidably inserted in the storage cavity 9. When the sponge 11 needs to be squeezed, the extrusion rod 1201 is pressed to slide, so that the extrusion plate 1202 squeezes the sponge 11, thereby accelerating the injection of the lubricant. The adjustment method is relatively simple and convenient, thereby improving practicality.

[0045] like Figure 1 and Figure 3 As shown, in some embodiments, an arcuate groove 13 is provided on the nut 2, and the arcuate groove 13 is correspondingly connected to the arcuate rolling groove 4. When the nut 2 is separated from the screw rod 1 to load or remove the ball 5, the situation in the spiral rolling groove 3 can be observed through the inner through hole of the nut 2, but the situation in the arcuate rolling groove 4 cannot be observed. By providing an arcuate groove 13 correspondingly connected to the arcuate rolling groove 4, it is convenient to observe the situation in the arcuate rolling groove 4 to ensure that when loading the ball 5, the arcuate rolling groove 4 is effectively filled, or when removing the ball 5, it can be ensured whether the arcuate rolling groove 4 is completely removed. At the same time, the opening of the arcuate groove 13 can also serve as a heat dissipation outlet, so that when the ball 5 rolls in a high-speed cycle, the heat can be discharged through the arcuate groove 13, thereby improving practicality.

[0046] like Figure 1-Figure 8 As shown, in this embodiment, a method for assembling a ball screw module quick assembly structure comprises the following steps:

[0047] S1: Installation preparation, add lubricant into the storage chamber 9, insert the blocking block 702 into the installation channel 6, press the squeezing rod 1201 so that the squeezing plate 1202 squeezes the sponge 11, so that the lubricant flows from the seepage hole 10 to the circulation raceway, and the lubricant flows from the spiral rolling groove 3 and the arc rolling groove 4, and then remove the blocking block 702;

[0048] S2: Install the balls. Stand the nut 2 upright with the installation channel 6 facing upwards. Place the balls 5 one by one into the installation channel 6. Under the action of gravity, the balls 5 slide down along the spiral rolling groove 3 and the arc rolling groove 4 respectively until the entire circulation raceway is filled. Then, insert the blocking block 702 into the installation channel 6 to block it. Fix the fixing plate 701 and the nut 2 by the cooperation of the bolts and the screw holes.

[0049] S3: Assemble the module, put the nut 2 on the screw rod 1, turn the knob screw rod 1 or the nut 2, and match the ball 5 with the thread groove on the screw rod 1, so that the assembly is completed.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ball screw module quick assembly structure, characterized in that: include: A screw rod (1) is movably sleeved on a nut (2), the inner wall of the nut (2) is provided with a spiral rolling groove (3), an arc-shaped rolling groove (4) is formed inside the nut (2), the two ends of the arc-shaped rolling groove (4) are respectively connected to the two ends of the spiral rolling groove (3), the spiral rolling groove (3) and the arc-shaped rolling groove (4) together form a circulating raceway, a plurality of balls (5) are arranged to roll in the circulating raceway, a mounting channel (6) is obliquely provided on the nut (2), the mounting channel (6) is connected to one of the connecting points of the spiral rolling groove (3) and the arc-shaped rolling groove (4), and a blocking member (7) for blocking the mounting channel (6) is provided on the nut (2).

2. The ball screw module quick assembly structure according to claim 1, characterized in that: The groove width of the spiral rolling groove (3) is smaller than the diameter of the ball (5).

3. The ball screw module quick assembly structure according to claim 1, characterized in that: The blocking member (7) comprises a fixing plate (701), the fixing plate (701) being fixed on the nut (2) by means of the cooperation of bolts and screw holes, and the fixing plate (701) being provided with a blocking block (702) which is plug-fitted with the installation channel (6).

4. The ball screw module quick assembly structure according to claim 3, characterized in that: The blocking block (702) is constructed as a rectangular block, the width of the blocking block (702) is consistent with the diameter of the ball (5), and the length of the blocking block (702) is greater than the diameter of the ball (5).

5. The ball screw module quick assembly structure according to claim 3, characterized in that: The blocking block (702) is provided with a curved surface (8) at one end close to the circulating raceway, and the curved surface (8) is coplanar with the inner wall of the circulating raceway.

6. The ball screw module quick assembly structure according to claim 5, characterized in that: A storage cavity (9) is provided inside the blocking block (702), and a seepage hole (10) communicating with the storage cavity (9) is provided on the arc surface (8).

7. The ball screw module quick assembly structure according to claim 6, characterized in that: A sponge (11) is arranged in the storage cavity (9), and an extrusion member (12) for extruding the sponge (11) is arranged on the fixing plate (701).

8. The ball screw module quick assembly structure according to claim 7, characterized in that: The extrusion member (12) comprises an extrusion rod (1201) slidably inserted on a fixed plate (701), and one end of the extrusion rod (1201) is provided with an extrusion plate (1202) slidably inserted in the storage cavity (9).

9. The ball screw module quick assembly structure according to claim 1, characterized in that: The nut (2) is provided with an arc-shaped groove (13), and the arc-shaped groove (13) is correspondingly connected to the arc-shaped rolling groove (4).

10. An assembly method for a ball screw module rapid assembly structure, characterized in that: The following steps are involved: S1: Installation preparation, adding lubricant into the storage chamber (9), inserting the blocking block (702) into the installation channel (6), pressing the squeezing rod (1201) so that the squeezing plate (1202) squeezes the sponge (11), thereby allowing the lubricant to flow from the seepage hole (10) to the circulation raceway, and the lubricant to flow from the spiral rolling groove (3) and the arc rolling groove (4), and then removing the blocking block (702); S2: Install the balls, stand the nut (2) upright and make the installation channel (6) face upwards, place the balls (5) one by one into the installation channel (6), and under the action of gravity, the balls (5) slide down along the spiral rolling groove (3) and the arc rolling groove (4) respectively until the entire circulation raceway is filled, and then insert the blocking block (702) into the installation channel (6) to block it, and fix the fixing plate (701) and the nut (2) by the cooperation of bolts and screw holes; S3: Assemble the module, sleeve the nut (2) onto the screw (1), turn the knob screw (1) or the nut (2), and fit the ball (5) into the thread groove on the screw (1), thereby completing the assembly.

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