Positioning tool for unifying starting points of screw threads

Abstract

The utility model relates to a positioning tool for unifying starting points of screw threads, which is arranged on an operation table and comprises a positioning block, a support frame, a rotating and up-down moving mechanism and a slide rail component. The sliding rail assembly and the supporting frame are arranged on the upper surface of the operation table, and the rotating and up-down moving assembly is arranged on the supporting frame. The rotating and up-and-down moving mechanism comprises a rotating assembly and an up-and-down moving assembly; the up-and-down moving assembly is arranged on the supporting frame and used for controlling up-and-down movement of the rotating assembly; an ejector pin probe for positioning the screw rod is arranged at a position, far away from the up-down moving assembly, of the rotating assembly; the positioning block is movably connected with the sliding rail assembly; the sliding rail assembly is used for driving the positioning block to slide to the position under the rotating assembly. According to the positioning tool, the rejection rate caused by too large or too small gap between the screw rod and the screw sleeve in the assembling process is reduced; the qualified rate of the finished assembly is improved; and the labor cost and the time of subsequent process inspection are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt production, in particular to a positioning tool for unifying the starting point of a screw thread. Background Art

[0002] Screw sleeve assemblies are widely used in automobile auxiliary parking systems, in which the parking brake force in the caliper is achieved through the transmission of the screw sleeve. In order to ensure the stable operation of the parking system, the screw sleeves need to be able to transmit stably. In order to ensure the stable transmission between the screw sleeves, the starting point of each screw thread must be strictly controlled during the production process. Otherwise, the clearance of the screw sleeves during assembly will be too small, affecting the smoothness of the transmission, or the clearance will be too large, affecting the structural strength, seriously affecting parking.

[0003] Therefore, it is very important to provide a positioning tool to unify the starting point of the screw thread. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning tool for unifying the starting point of the screw thread in order to overcome the defects of the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] The utility model provides a positioning tool for unifying the starting point of a screw thread, which is arranged on an operating table and comprises a positioning block, a support frame, a rotating and up-and-down moving mechanism and a slide rail assembly;

[0007] The slide rail assembly and the support frame are arranged on the upper surface of the operating table, and the rotating and up-and-down moving assembly is arranged on the support frame; the rotating and up-and-down moving mechanism includes a rotating assembly and an up-and-down moving assembly; the up-and-down moving assembly is arranged on the support frame and is used to control the up-and-down movement of the rotating assembly; a pin probe with a positioning screw is arranged at a position of the rotating assembly away from the up-and-down moving assembly; the positioning block is movably connected to the slide rail assembly; the slide rail assembly is used to drive the positioning block to slide to the bottom of the rotating assembly.

[0008] In one embodiment of the utility model, the slide rail assembly includes a slide rail and a sliding cylinder, the sliding cylinder is arranged on the slide rail and movably connected to the slide rail, and the output shaft of the sliding cylinder is connected to the bottom of the positioning block.

[0009] In one embodiment of the present invention, the screw comprises an integrated screw body and a positioning head, a stopper is provided between the screw body and the positioning head, and a spline hole is provided at the center position of the positioning head.

[0010] In one embodiment of the present invention, the outer diameter of the stopper is greater than the outer diameter of the positioning head.

[0011] In one embodiment of the present invention, the outer diameter of the stopper is greater than the outer diameter of the screw body.

[0012] In one embodiment of the present invention, a positioning groove matching the screw body is provided at the vertical center of the positioning block.

[0013] In one embodiment of the present utility model, the rotating assembly includes a servo motor and a rotating shaft, the servo motor is connected to the up and down moving mechanism, and the output shaft of the servo motor is connected to the rotating shaft.

[0014] In one embodiment of the present utility model, the up-and-down moving component is an up-and-down moving cylinder, and the output shaft of the up-and-down moving cylinder is connected to a servo motor.

[0015] In one embodiment of the present invention, the end of the rotating shaft away from the servo motor is connected to the ejector probe.

[0016] In one embodiment of the present invention, the ejector pin probe is engaged with the spline hole.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model discloses a positioning tool for unifying the starting point of the screw thread, reduces the scrap rate caused by too large or too small gap between the screw and the sleeve during assembly, improves the qualified rate of the finished component (screw sleeve), and saves the labor cost and time of the subsequent process inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural schematic diagram of a positioning tool for unifying the starting point of a screw thread of the utility model;

[0020] Figure 2 It is the position relationship diagram of the servo motor, the rotating shaft and the ejector probe;

[0021] Figure 3 Schematic diagram of the screw structure.

[0022] Numbers in the figure: 1. Operating table; 2. Support frame; 3. Up and down moving cylinder; 4. Servo motor; 5. Rotating shaft; 6. Ejector probe; 7. Slide rail; 8. Sliding cylinder; 9. Positioning block; 10. Positioning head; 11. Screw body; 12. Stopper; 13. Spline hole. DETAILED DESCRIPTION

[0023] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0026] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0027] Example 1

[0028] This embodiment provides a positioning tool for unifying the starting point of the screw thread, which is arranged on the operating table 1 and connected to an external manipulator when in use, such as Figure 1-2 As shown, it includes a positioning block 9, a support frame 2, a rotating and up-and-down moving mechanism and a slide rail assembly; the slide rail assembly and the support frame 2 are arranged on the upper surface of the operating table 1, and the rotating and up-and-down moving assembly is arranged on the support frame 2; the rotating and up-and-down moving mechanism includes a rotating assembly and an up-and-down moving assembly; the up-and-down moving assembly is arranged on the support frame 2, and is used to control the up-and-down movement of the rotating assembly; a pin probe 6 with a positioning screw is arranged at a position of the rotating assembly away from the up-and-down moving assembly; the positioning block 9 is movably connected to the slide rail assembly; the slide rail assembly is used to drive the positioning block 9 to slide to the bottom of the rotating assembly.

[0029] The screw includes an integrated screw body 11 and a positioning head 10, a stopper 12 is provided between the screw body 11 and the positioning head 10, a spline hole 14 is provided at the center of the positioning head 10, the outer diameter of the stopper 12 is larger than the outer diameter of the positioning head 10, and the outer diameter of the stopper 12 is larger than the outer diameter of the screw body 11 ( Figure 3 ).

[0030] Furthermore, the slide rail assembly includes a slide rail 7 and a sliding cylinder 8, the sliding cylinder 8 is arranged on the slide rail 7 and movably connected to the slide rail 7, the output shaft of the sliding cylinder 8 is connected to the bottom of the positioning block 9; the positioning block 9 is provided with a positioning groove matching the screw body 11 along the vertical center position.

[0031] Furthermore, the rotating assembly includes a servo motor 4 and a rotating shaft 5. The servo motor 4 is connected to the up and down moving mechanism. The output shaft of the servo motor 4 is connected to the rotating shaft 5. A torque sensing sensor is provided on the rotating shaft 5. The end of the rotating shaft 5 away from the servo motor 4 is connected to a pin probe 6 that engages with the spline hole 13.

[0032] Furthermore, the up-and-down moving component is an up-and-down moving cylinder 3 , and the output shaft of the up-and-down moving cylinder 3 is connected to the servo motor 4 .

[0033] When in use, the external manipulator places the screw to be rolled on the positioning groove of the positioning block 9. At this time, the stopper 12 on the screw does not completely overlap with the notch of the positioning groove. The sliding cylinder 8 drives the positioning block 9 to move along the slide rail 7 to the bottom of the rotating shaft 5. The up-and-down moving cylinder 3 moves (moves down) to drive the servo motor 4 to move down, driving the ejector probe 6 to insert into the position of the spline hole 13. The servo motor 4 controls the rotating shaft 5 to rotate, thereby driving the ejector probe 6 to rotate, and then driving the screw to rotate. When the stopper 12 on the screw coincides with the notch of the positioning groove on the positioning block 9, the torque sensor on the rotating shaft 5 senses the change in torque and stops rotating, that is, the positioning is completed. The up-and-down moving cylinder 3 moves (moves up) to retract the ejector probe 6; the sliding cylinder 8 automatically returns, and another external manipulator clamps the screw that has been positioned and transfers it to the thread rolling machine of the next process (thread rolling process) for thread rolling.

[0034] The positioning tooling for unifying the starting points of the screw threads of this embodiment can ensure the consistency of the starting points of the screw threads to the greatest extent possible.

[0035] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the interpretation of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A positioning tool for unifying the starting point of a screw thread, arranged on an operating table, characterized in that: It includes a positioning block, a support frame, a rotating and up-and-down moving mechanism and a slide rail assembly; The slide rail assembly and the support frame are arranged on the upper surface of the operating table, and the rotating and up-and-down moving assembly is arranged on the support frame; the rotating and up-and-down moving mechanism includes a rotating assembly and an up-and-down moving assembly; the up-and-down moving assembly is arranged on the support frame and is used to control the up-and-down movement of the rotating assembly; a pin probe with a positioning screw is arranged at a position of the rotating assembly away from the up-and-down moving assembly; the positioning block is movably connected to the slide rail assembly; the slide rail assembly is used to drive the positioning block to slide to the bottom of the rotating assembly.

2. A positioning tool for unifying the starting point of a screw thread according to claim 1, characterized in that: The slide rail assembly comprises a slide rail and a slide cylinder. The slide cylinder is arranged on the slide rail and movably connected to the slide rail. The output shaft of the slide cylinder is connected to the bottom of the positioning block.

3. A positioning tool for unifying the starting point of a screw thread according to claim 1, characterized in that: The screw comprises an integrated screw body and a positioning head, a stopper is arranged between the screw body and the positioning head, and a spline hole is arranged at the center of the positioning head.

4. A positioning tool for unifying the starting point of screw threads according to claim 3, characterized in that: The outer diameter of the stopper is greater than the outer diameter of the positioning head.

5. A positioning tool for unifying the starting point of screw threads according to claim 3, characterized in that: The outer diameter of the stopper is greater than the outer diameter of the screw body.

6. A positioning tool for unifying the starting point of a screw thread according to claim 3, characterized in that: The positioning block is provided with a positioning groove matching the screw body at the vertical center position.

7. A positioning tool for unifying the starting point of screw threads according to claim 6, characterized in that: The rotating assembly comprises a servo motor and a rotating shaft. The servo motor is connected to the up and down moving mechanism, and the output shaft of the servo motor is connected to the rotating shaft.

8. A positioning tool for unifying the starting point of screw threads according to claim 7, characterized in that: The up-and-down moving component is an up-and-down moving cylinder, and the output shaft of the up-and-down moving cylinder is connected to a servo motor.

9. A positioning tool for unifying the starting point of screw threads according to claim 7, characterized in that: The end of the rotating shaft away from the servo motor is connected to the ejector probe.

10. A positioning tool for unifying the starting point of screw threads according to claim 9, characterized in that: The ejector pin probe is engaged with the spline hole.

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