Automatic marking mechanism for double-meshing instrument

Abstract

The utility model relates to an automatic marking mechanism for a double-meshing instrument, which belongs to the technical field of gear measurement, and is characterized in that when the double-meshing instrument is used for detection, a measured abnormal point needs to be marked, a marking pen is driven by retraction of an air cylinder and a compression spring to feed leftwards until the marking pen is in contact with a workpiece, so that the marking function is realized; and meanwhile, the resistance of the compression spring is overcome to drive the marking pen to retreat, so that the automatic retreating function of the marking pen is realized, and the mechanism can be directly applied to the double-meshing instrument to mark abnormal measurement points.

Description

Technical Field

[0001] The utility model relates to the technical field of gear measurement. Background Art

[0002] When the double-meshing instrument performs double-meshing detection, it is usually necessary to mark the abnormal positions of the workpiece. The traditional method is usually to manually mark the abnormal points with a marking pen. Although this method can also mark the abnormal points, it is easy to mark the wrong positions and cause misjudgment because it is manually operated. In addition, because it requires manual operation, it will affect the measurement efficiency of the double-meshing detection.

[0003] When the existing double-engaging instrument performs double-engaging detection, there is also a mechanism that realizes automatic marking by controlling the feeding of the marking pen through a cylinder. However, the marking pen needs to be installed in a sleeve, and then a spring is installed, and then the end cover is installed to complete the replacement of the marking pen. The marking pen is a consumable part and often needs to be replaced. This replacement method is inefficient. Utility Model Content

[0004] The utility model is to solve the above problems, and further designs a marking mechanism that can save manual operation, and the marking action can be completed automatically, and the replacement of the marking pen can be completed by only loosening the top screw, thereby improving the measurement efficiency.

[0005] An automatic marking mechanism for a double-engaging instrument, characterized in that: the marking pen is placed in the inner hole on the left side of the pen holder, the top screw is screwed into the threaded hole on the left side of the pen holder and presses the marking pen tightly, the pen holder is inserted into the sleeve, the compression spring is inserted into the pen holder and placed in the sleeve, the left side of the compression spring is tightly against the step end face of the pen holder, the right side of the compression spring is tightly against the inner end face of the sleeve, the compression spring is a light-load spring, when the marking pen hits the workpiece, the compression force of the compression spring is within 2N, and the small pressure can effectively protect the marking pen from being damaged, the cylinder bracket is screwed into the threaded hole on the right side of the sleeve, and the cylinder is fixed to the cylinder bracket The baffle is screwed into the threaded hole on the right side of the pen holder. When the workpiece needs to be marked, the piston rod of the cylinder retracts to the left and disengages from the baffle. At this time, the compression spring provides pressure for marking. When marking is not required, the cylinder is extended to the right, and the piston rod of the cylinder moves to the right against the baffle, thereby driving the marking pen to move to the right and disengage from the workpiece. The retaining spring is stuck on the right side of the pen holder. When the cylinder is retracted and no marking is performed, the retaining spring will contact the right end face of the sleeve to play a limiting role.

[0006] Compared with the prior art, the utility model has the following beneficial effects: it only needs to fix the mechanism near the workpiece to be measured by the double-meshing instrument, and the cylinder is ventilated. When an abnormal point appears during the double-meshing detection, the cylinder automatically controls the marking pen to mark the workpiece, thereby realizing the function of automatic marking and improving the measurement efficiency.

[0007] Compared with the prior art, the utility model has the following beneficial effects: the marking pen can be replaced by only loosening the top screw, thereby improving the speed of replacing the marking pen and further improving the efficiency of double-engaging measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The utility model is a cross-sectional view of an automatic marking mechanism for a double-engraving instrument according to an embodiment of the present invention.

[0009] Figure 2 It is a three-dimensional view of an automatic marking mechanism for a double-meshing instrument according to an embodiment of the utility model. DETAILED DESCRIPTION

[0010] An automatic marking mechanism for a double-engaging instrument comprises: a marking pen 1, a top screw 2, a pen holder 3, a sleeve 4, a cylinder 5, a cylinder bracket 6, a baffle 7, a retaining spring 8, and a compression spring 9.

[0011] The marking pen 1 is placed in the inner hole on the left side of the pen holder 3, the top screw 2 is screwed into the threaded hole on the left side of the pen holder 3 and presses the marking pen 1 tightly, the pen holder 3 is inserted into the sleeve 4, the compression spring 9 is inserted into the pen holder 3 and placed in the sleeve 4, the left side of the compression spring 9 is tightly against the step end face of the pen holder 3, and the right side of the compression spring 9 is tightly against the inner end face of the sleeve 4. The compression spring 9 is a light-load spring. When the marking pen 1 hits the workpiece, the compression force of the compression spring 9 is within 2N. The small pressure can effectively protect the marking pen 1 from damage. The cylinder bracket 6 is screwed into the threaded hole on the right side of the sleeve 4, and the cylinder 5 is fixed on the cylinder. In the cylinder bracket 6, the baffle 7 is screwed into the right threaded hole of the pen shaft 3. When the workpiece needs to be marked, the piston rod of the cylinder 5 retracts to the left and disengages from the baffle 7. At this time, the compression spring 9 provides pressure for marking. When marking is not required, the cylinder 5 is extended to the right, and the piston rod of the cylinder 5 moves to the right against the baffle 7, thereby driving the marking pen 1 to move to the right and disengage from the workpiece. The retaining spring 8 is stuck on the right side of the pen shaft 3. When the cylinder 5 is retracted and no marking is performed, the retaining spring 8 will contact the right end face of the sleeve 4 to play a limiting role.

Claims

1. An automatic marking mechanism for a double-engraving instrument, characterized in that: The marking pen (1) is placed in the inner hole on the left side of the pen holder (3), the top screw (2) is screwed into the threaded hole on the left side of the pen holder (3) and presses the marking pen (1), the pen holder (3) is inserted into the sleeve (4), the compression spring (9) is inserted into the pen holder (3) and placed in the sleeve (4), the left side of the compression spring (9) is closely attached to the step end face of the pen holder (3), the right side of the compression spring (9) is closely attached to the inner end face of the sleeve (4), the cylinder bracket (6) is screwed into the threaded hole on the right side of the sleeve (4), the cylinder (5) is fixed in the cylinder bracket (6), and the baffle (7) is screwed into the threaded hole on the right side of the pen holder (3). When the workpiece needs to be marked, the piston rod of the cylinder (5) retracts to the left and disengages from the baffle (7). At this time, the compression spring (9) provides pressure for marking. When marking is not required, the cylinder (5) is in a rightwardly extended state. The piston rod of the cylinder (5) moves to the right against the baffle (7), thereby driving the marking pen (1) to move to the right and disengage from the workpiece. The retaining spring (8) is clamped on the right side of the pen holder (3). When the cylinder (5) is retracted and marking is not performed, the retaining spring (8) contacts the right end surface of the sleeve (4) to play a limiting role.

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