Ball screw pair nut machining and positioning tool

Abstract

The utility model belongs to the field of ball screw pair nut machining, and particularly relates to a ball screw pair nut machining positioning tool which comprises a side plate and a stand column, a mounting groove is formed in the top of the side plate, an inserting hole is formed in one side of the side plate and communicated with the mounting groove, a bottom plate is fixedly connected to the side, away from the inserting hole, of the side plate, and the stand column is fixedly connected with the bottom plate. At least two positioning holes are formed in one side of the stand column, and a mounting frame is fixedly connected to the top of the stand column. Through the structural design of the side plates, the bottom plate, the stand columns, the pressing blocks and the positioning plug pins, in the operation process, the ball screw pair nut is placed on the bottom plate, the pressing blocks abut against the top of the ball screw pair nut, and effective positioning treatment on the ball screw pair nut can be achieved; therefore, a worker is helped to carry out treatment of the next procedure after the position of the measuring head is adjusted subsequently, and the problem that in the prior art, in the operation process, a tool is prone to shaking due to unstable hand holding, and consequently the nut shakes and topples over is solved.

Description

Technical Field

[0001] This utility model relates to the field of ball screw pair nut processing, specifically a positioning tooling for ball screw pair nut processing. Background Technology

[0002] The nut structure of a ball screw assembly includes the inner raceway of the thread and some elements in the circumferential direction of its outer diameter, such as keyways, mounting holes, and oil holes. The positional relationship of these elements is often related to the raceway. For example, the oil hole needs to be connected to the pressure head of the raceway to accurately lubricate the balls. This requires repeated tool setting to confirm the phase relationship between the oil hole and the raceway during machining, which is time-consuming and labor-intensive. Therefore, a Chinese utility model patent (publication number: CN220806400U) discloses a positioning fixture for machining the nut of a ball screw assembly. Using the thread raceway as a reference for positioning, it can quickly locate the position corresponding to the inner raceway on the outer circumference of the nut, which improves both positioning efficiency and accuracy.

[0003] However, the above-mentioned device still has some shortcomings in use: Specifically, when the operator operates it, after the pressure probe is brought into contact with the thread groove of the nut, the operator needs to hold the positioning fixture with one hand and adjust the position of the pressure probe and perform positioning with the other hand. During the operation, the fixture is prone to shaking due to unstable hand position, which in turn causes the nut to shake and tilt, causing the pressure probe to disengage from the original thread groove, reducing the efficiency of positioning. Therefore, in order to address the above situation, a positioning fixture for ball screw pair nut processing is proposed. Utility Model Content

[0004] To address the problem that existing technologies are prone to tooling wobbling due to unstable hand handling during operation, which can lead to nut shaking and tipping and reduce positioning efficiency, this utility model proposes a positioning tooling for ball screw pair nut processing.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a ball screw pair nut processing and positioning fixture, including a side plate and a column, the top of the side plate is provided with an installation groove, one side of the side plate is provided with an insertion hole, the insertion hole is connected to the installation groove, and a base plate is fixedly connected to the side of the side plate away from the insertion hole.

[0006] The column has at least two positioning holes on one side, and a mounting bracket is fixedly connected to the top of the column. One end of the mounting bracket is provided with a pressure head, and the other end of the mounting bracket is fixedly connected to an adjustment mechanism. Two pressure blocks are fixed on the adjustment mechanism.

[0007] When the column is fitted into the mounting groove, a positioning pin is inserted into the insertion hole, and the positioning pin is engaged with the positioning hole after it passes through the insertion hole.

[0008] Preferably, the top of the base plate is provided with a placement groove, on which a ball screw pair nut is placed, and the bottom of the pressure block contacts the top of the ball screw pair nut.

[0009] Preferably, the pressure block is in the shape of an inverted "L" and a rubber pad is provided at the bottom of the pressure block.

[0010] Preferably, the top of the side plate is fixedly connected to limit plates at both ends of the mounting groove, and the limit plates have retaining edges.

[0011] Preferably, baffles are provided on both sides of the outer wall of the mounting bracket, and when the mounting bracket slides upward, the baffles will contact the edge.

[0012] Preferably, the adjustment mechanism includes a fixing block, which is L-shaped, with a rectangular groove at the bottom and a through hole on one side of the outer wall of the fixing block, the through hole communicating with the rectangular groove.

[0013] Preferably, a screw is rotatably connected to one side of the inner wall of the rectangular groove via a bearing. One end of the screw passes through a through hole and is fixed with a knob. A movable block is threaded onto the screw and slides with the rectangular groove. An installation block is fixed to the bottom of the movable block.

[0014] Preferably, the mounting block is provided with a probe.

[0015] 1. This utility model, through its structural design of side plate, base plate, column, pressure block, and positioning pin, allows the ball screw nut to be placed on the base plate during operation. The pressure block abuts against the top of the ball screw nut, effectively positioning the nut. This facilitates subsequent adjustment of the probe position by the operator before proceeding to the next step, avoiding the problem of tooling shaking and nut tipping caused by unstable handling in existing technologies.

[0016] 2. Through the structural design of the limiting plate, the side guard and the baffle, after the processing is completed, the limiting of the ball screw pair nut can be released by removing the positioning pin and lifting the mounting frame upward. At the same time, the cooperation between the side guard and the baffle can limit the mounting frame and prevent the column from separating from the side plate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural diagram of the positioning fixture;

[0019] Figure 2 A schematic diagram of the assembly structure for positioning tooling;

[0020] Figure 3 This is a schematic diagram of the assembly structure of the adjustment mechanism;

[0021] Figure 4 This is a schematic diagram of the structure when the mounting frame is raised;

[0022] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0023] In the diagram: 1. Side plate; 101. Mounting groove; 102. Insertion hole; 2. Base plate; 201. Placement groove; 3. Limiting plate; 301. Edge retainer; 4. Column; 401. Positioning hole; 5. Mounting bracket; 6. Baffle; 7. Pressure head; 8. Adjustment mechanism; 801. Fixing block; 8010. Rectangular groove; 8011. Through hole; 802. Screw; 803. Moving block; 804. Mounting block; 9. Probe; 10. Pressure block; 11. Positioning pin. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] The following is in conjunction with the appendix Figure 1 —5 provides further detailed description of this application.

[0026] This application discloses a ball screw pair nut machining and positioning fixture, including a side plate 1 and a column 4. The top of the side plate 1 is provided with a mounting groove 101, and one side of the side plate 1 is provided with an insertion hole 102, which communicates with the mounting groove 101. A base plate 2 is fixedly connected to the side of the side plate 1 away from the insertion hole 102.

[0027] At least two positioning holes 401 are opened on one side of the column 4. A mounting bracket 5 is fixedly connected to the top of the column 4. A pressure head 7 is provided at one end of the mounting bracket 5. An adjustment mechanism 8 is fixedly connected to the other end of the mounting bracket 5. Two pressure blocks 10 are fixed on the adjustment mechanism 8.

[0028] When the column 4 is fitted into the mounting groove 101, a positioning pin 11 is inserted into the insertion hole 102. After the positioning pin 11 passes through the insertion hole 102, it engages with the positioning hole 401.

[0029] Reference Figure 1 , Figure 2 and Figure 4 The top of the base plate 2 is provided with a placement groove 201, on which a ball screw pair nut is placed. The bottom of the pressure block 10 is in contact with the top of the ball screw pair nut.

[0030] By placing the ball screw pair nut into the placement groove 201 and then lowering the pressure block 10 to contact the ball screw pair nut, the positioning of the ball screw pair nut can be effectively achieved, thus facilitating subsequent processing.

[0031] Reference Figure 1 , Figure 2 and Figure 4 The pressure block 10 is shaped like an inverted "L" and has a rubber pad at the bottom.

[0032] The rubber pad prevents wear on the surface of the ball screw nut.

[0033] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The top of the side plate 1 is fixedly connected to both ends of the mounting groove 101 with a limiting plate 3. The limiting plate 3 has a baffle 301. Both sides of the outer wall of the mounting frame 5 are provided with baffles 6. When the mounting frame 5 slides upward, the baffles 6 will contact the baffles 301.

[0034] After processing, the limit on the ball screw pair nut can be released by removing the positioning pin 11 and lifting the mounting bracket 5 upward. At the same time, the cooperation between the flange 301 and the baffle 6 can limit the mounting bracket 5 and prevent the column 4 from separating from the side plate 1.

[0035] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The adjusting mechanism 8 includes a fixed block 801, which is L-shaped. A rectangular groove 8010 is provided at the bottom of the fixed block 801. A through hole 8011 is provided on one side of the outer wall of the fixed block 801, which connects to the rectangular groove 8010. A screw 802 is rotatably connected to one side of the inner wall of the rectangular groove 8010 via a bearing. A knob is fixed after one end of the screw 802 passes through the through hole 8011. A moving block 803 is threaded onto the screw 802. The moving block 803 slides with the rectangular groove 8010. An installation block 804 is fixed at the bottom of the moving block 803. A probe 9 is provided on the installation block 804.

[0036] Once the ball screw nut is fixed, the mounting block 804 extends into the inner cavity of the ball screw nut. By rotating the knob, the screw 802 can be rotated, which in turn causes the moving block 803 to move, and at the same time, the mounting block 804 moves, thus causing the probe 9 to move and contact the thread raceway of the ball screw nut.

[0037] Furthermore, probe 9 and pressure head 7 are on the same horizontal line.

[0038] Specifically, the mounting bracket 5 has a first threaded hole, a first threaded rod is threaded into the first threaded hole, and a pressure head 7 is fixed to the end of the first threaded rod that protrudes from the first threaded hole.

[0039] Specifically, the mounting block 804 has a second threaded hole, a second threaded rod is threaded into the second threaded hole, and a probe 9 is fixed to the end of the second threaded rod that protrudes from the second threaded hole.

[0040] Accordingly, by setting the first threaded rod and the second threaded rod, the positions of the pressure head 7 and the probe 9 can be further locally adjusted to meet the processing requirements.

[0041] Working principle: First, place the ball screw nut to be processed on the placement groove 201. Then, slide the mounting bracket 5 downward so that the pressure block 10 abuts against the top surface of the ball screw nut. Next, insert the positioning pin 11 into the insertion hole 102 so that it extends into the positioning hole 401 to achieve positioning of the column 4, thereby fixing the position of the mounting bracket 5. This allows the pressure block 10 to cooperate with the placement groove 201 to complete the positioning of the ball screw nut. After fixing the ball screw nut, the mounting block 804 extends into the inner cavity of the ball screw nut. By turning the knob, the screw 802 can be rotated, thereby moving the moving block 803 and the mounting block 804. This causes the probe 9 to move and contact the thread raceway of the ball screw nut.

[0042] The position of the pressure head 7 can be adjusted so that when the ball screw pair nut is placed on the placement groove 201, the pressure head 7 contacts the outer wall of the ball screw pair nut.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A positioning fixture for machining the nut of a ball screw assembly, characterized in that, include: Side plate (1), the top of the side plate (1) is provided with a mounting groove (101), and one side of the side plate (1) is provided with a socket (102). The socket (102) communicates with the mounting groove (101), and a base plate (2) is fixedly connected to the side of the side plate (1) away from the socket (102). The column (4) has at least two positioning holes (401) on one side. The top of the column (4) is fixedly connected to a mounting bracket (5). One end of the mounting bracket (5) is provided with a pressure head (7). The other end of the mounting bracket (5) is fixedly connected to an adjustment mechanism (8). Two pressure blocks (10) are fixed on the adjustment mechanism (8). When the column (4) is fitted onto the mounting groove (101), a positioning pin (11) is inserted into the insertion hole (102), and the positioning pin (11) passes through the insertion hole (102) and engages with the positioning hole (401).

2. The positioning fixture for machining ball screw nut according to claim 1, characterized in that: The top of the base plate (2) is provided with a placement groove (201), on which a ball screw pair nut is placed, and the bottom of the pressure block (10) is in contact with the top of the ball screw pair nut.

3. The ball screw pair nut machining and positioning fixture according to claim 2, characterized in that: The pressure block (10) is in the shape of an inverted "L" and a rubber pad is provided at the bottom of the pressure block (10).

4. The positioning fixture for machining ball screw nut according to claim 3, characterized in that: The top of the side plate (1) is fixedly connected to both ends of the mounting groove (101) with a limiting plate (3), and the limiting plate (3) has a retaining edge (301).

5. The ball screw pair nut machining and positioning fixture according to claim 4, characterized in that: Both sides of the outer wall of the mounting bracket (5) are provided with baffles (6). When the mounting bracket (5) slides upward, the baffles (6) will contact the edge (301).

6. The positioning fixture for machining ball screw nut according to claim 1, characterized in that: The adjustment mechanism (8) includes a fixing block (801), which is "L" shaped. A rectangular groove (8010) is provided at the bottom of the fixing block (801), and a through hole (8011) is provided on one side of the outer wall of the fixing block (801). The through hole (8011) is connected to the rectangular groove (8010).

7. The positioning fixture for machining a ball screw pair nut according to claim 6, characterized in that: A screw (802) is rotatably connected to one side of the inner wall of the rectangular groove (8010) via a bearing. One end of the screw (802) passes through the through hole (8011) and is fixed with a knob. A moving block (803) is threaded onto the screw (802). The moving block (803) slides with the rectangular groove (8010). An installation block (804) is fixed to the bottom of the moving block (803).

8. The ball screw pair nut machining and positioning fixture according to claim 7, characterized in that: The mounting block (804) is equipped with a probe (9).

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