CN204902772U - Helical pitch detector - Google Patents

Abstract

The utility model provides a screw lead detection device, which belongs to the technical field of mechanical processing devices, and in particular refers to a lead detection device, which includes a main machine table, a linear guide rail, a V-shaped groove slide table, a grating ruler, a detection mechanism and a clamping device. Mechanism, the grating scale, linear guide rail and V-groove sliding table are arranged on the main platform in sequence along the horizontal direction, the detection mechanism includes sliding table, detection arm, detection head and touch screen, and the sliding table is arranged on the linear guide rail , the slide table is provided with a detection arm that can move up and down and a detection head connected to the detection arm; the touch screen is provided on the slide table and is located on one side of the detection arm; the clamping mechanism is provided in a V-shaped groove on the sliding platform; a laser interferometer is arranged on the right side of the host platform. The utility model has the advantages of being able to detect relatively long workpieces, convenient loading and unloading of workpieces, simple operation, easy grasp, convenient placement and low cost.

Description

A lead detector

technical field

The utility model belongs to the technical field of mechanical processing devices, in particular to a screw lead detector.

Background technique

At present, the lead detection of the ball screw of the mechanical transmission part uses the motor to drive the screw to rotate, and the real-time displacement of the nut is detected by the laser interferometer to achieve precision detection. However, this equipment is often limited by the space of the machine and can only detect relatively small Short workpieces, and this type of equipment is often complex in system, very strict on workpiece clamping, and expensive. For example, a dynamic detection method introduced in the "Research on the Dynamic Detector of the Steering Ball Screw Lead Error" published in the "Journal of Chongqing University" No. 17, No. 6, November 1994, has a complex structure. Signal conversion to realize the detection of lead error. Although this mechanism can accurately detect the lead accuracy of the screw, it cannot be applied to various enterprises because it is a laboratory product, and it has strict requirements on the length of the screw.

Therefore, in practical applications, how to design a lead detector with simple structure and low cost, which can detect relatively long ball screws, has become a technical problem to be solved by those skilled in the art.

Contents of the invention

The problem to be solved by the utility model is to provide a method for detecting the accuracy of the ball screw before installation and use, which can detect a long ball screw, realize any position as the starting point, have a long service life, and the loading and unloading of the workpiece is simple and convenient. The lead detector is easy to place, low in cost, and can greatly improve processing efficiency.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a lead detector, including a host platform, a linear guide rail, a V-shaped groove slide table, a grating ruler, a detection mechanism and a clamping mechanism, the grating ruler, The linear guide rail and the V-groove slide table are arranged on the main platform in sequence along the horizontal direction. The detection mechanism includes a slide table, a detection arm, a detection head and a touch screen. The slide table is arranged on the linear guide rail. The slide table is provided with A detection arm that can move up and down and a detection head connected to the detection arm; the touch screen is arranged on the sliding table, located on one side of the detection arm; the clamping mechanism is arranged on the V-shaped groove sliding table.

The detection head is located above the V-shaped groove slide table, facing the groove position of the V-shaped groove slide table.

A laser interferometer is arranged on the right side of the host platform, and the laser interferometer faces the position of the host platform.

The clamping mechanism is a pair of position-adjustable clamps with a certain transverse distance from each other, which are respectively a first clamp and a second clamp.

The first clamp includes a first locking bolt and a first locking pressure plate, both ends of the first locking pressure plate are arranged at both ends of the V-shaped chute platform, and the first locking bolt is radially arranged on the first Lock the central position of the pressing plate, and the first locking bolt passes through the first locking pressing plate to align with the groove position of the V-shaped chute platform.

The second fixture includes a second locking bolt and a second locking pressure plate, both ends of the second locking pressure plate are arranged at both ends of the V-shaped chute table, and the second locking bolt is radially arranged on the second Lock the center position of the pressing plate, and the second locking bolt passes through the second locking pressing plate to align with the groove position of the V-shaped chute platform.

Due to the adoption of the above technical scheme, (1) the laser interferometer is used for accurate reading to ensure the reading accuracy; (2) the detection mechanism realizes precise positioning through the two-point contact positioning method of the detection head and the working arc surface of the lead screw, ensuring that the detection process (3) It can detect ball screws, trapezoidal screws and racks of any different specifications; (4) Simple operation, easy to grasp, and easy to place; (5) Low detection cost, for the detection of ball screw lead The precision has high performance-price ratio, good stability and long service life at the same time, and the market prospect is broad.

The beneficial effects of the utility model are: it can realize the detection of the accuracy of the ball screw before installation and use, detect the longer ball screw, realize any position as the starting point, long service life, simple and convenient loading and unloading of workpieces, convenient placement, and low cost. The advantages of greatly improving processing efficiency.

Description of drawings

The utility model is specifically described below with reference to the accompanying drawings and in conjunction with examples. The advantages and implementation methods of the present utility model will be more obvious. Any sense of limitation, in the attached drawing:

Fig. 1 is a structural representation of the utility model

In the picture:

1. Host platform 2. Linear guide rail 3. V-groove slide table

4. Grating ruler 5. Slide table 6. Detection arm

7. Detection head 8. Touch screen 9. Laser interferometer

10. The first locking platen 11, the first locking bolt 12, the second locking platen

13. The second locking bolt

Detailed ways

As shown in Figure 1, a lead detector of the present invention includes a main frame 1, a linear guide rail 2, a V-shaped groove slide table 3, a grating ruler 4, a detection mechanism and a clamping mechanism. The guide rail 2 and the V-groove slide table 3 are successively arranged on the main frame 1 along the horizontal direction, wherein the linear guide rail 2 and the grating ruler 4 have a certain horizontal length, and the detection mechanism includes a slide table 5, a detection arm 6, a detection Head 7 and touch screen 8, described slide table 5 is arranged on the linear guide rail 2, and this slide table 5 is provided with the detection arm 6 that can move up and down and the detection head 7 that is connected on the described detection arm 6; The touch screen 8 It is arranged on the slide table 5 and is located on the side of the detection arm 6; the detection mechanism is connected with the reading head of the grating ruler 4, and the clamping mechanism is arranged on the V-shaped groove slide table 3 for fixing the workpiece to be detected; The detection head 7 is located above the V-shaped groove slide table 3, facing the groove position of the V-shaped groove slide table 3; the right side of the main table 1 is provided with a laser interferometer 9, and the laser interferometer 9 faces the position of the main table ; The clamping mechanism is a pair of clamps with a certain lateral distance and adjustable positions, which are detachable first clamps and second clamps respectively; the first clamp includes a first locking bolt 11 and a first lock Tighten the pressing plate 10, the two ends of the first locking pressing plate 10 are arranged at both ends of the V-shaped chute table 3, the first locking bolt 11 is radially arranged at the center of the first locking pressing plate 10, the first locking The tightening bolt 11 passes through the first locking pressing plate 10 and is aligned with the groove position of the V-shaped chute table 3; the second clamp includes a second locking bolt 13 and a second locking pressing plate 12, and the second locking pressing plate The two ends of 12 are arranged at both ends of the V-shaped chute platform 3, and the second locking bolt 13 is radially arranged at the center of the second locking pressure plate 12, and the second locking bolt 13 passes through the second locking pressure plate 12 Align the V-shaped chute table 3 groove position.

The working process of this example: when working, manually lift the detection head 7 (the detection head 7 needs to be selected according to the type of the screw with the corresponding size of the detection head 7), and apply an external force to the detection mechanism to make the detection mechanism move horizontally along the linear guide rail 2 , according to the reading of the grating ruler 4, reach the designated position (the position is different according to the lead of the screw), put down the detection head 7, make the detection head 7 accurately positioned in the groove of the screw, and pass the reading of the laser interferometer 9 , to realize the detection of lead screw lead accuracy; through multi-point testing, the detection data can be displayed on the touch screen 8 in real time, and charts can be generated through self-edited software, which can visually display the lead screw lead out-of-tolerance position and out-of-tolerance value, and through the chart Determine the accuracy grade of the lead screw to be inspected based on the accuracy range curve that comes with it. In the utility model, the laser interferometer 9 realizes accurate reading, and the detection head 7 realizes precise positioning, which is an ideal special tool for detecting the lead accuracy of various models and lengths of ball screws.

The embodiments of the present utility model have been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the scope of the present utility model should still belong to the scope covered by this patent.

Claims (6)

1. a helical pitch detector, it is characterized in that: comprise main engine bed, line slideway, V-type groove slide unit, grating scale, testing agency and clamping device, described grating scale, line slideway and V-type groove slide unit are arranged on main engine bed successively in the horizontal direction, described testing agency comprises slide unit, detection arm, detection head and touch-screen, described slide unit is arranged on line slideway, this slide unit is provided with the detection arm that can move up and down and the detection head be connected in described detection arm; Described touch-screen is arranged on slide unit, is positioned at detection arm side; Described clamping device is arranged on V-type groove slide unit.

2. helical pitch detector according to claim 1, is characterized in that: described detection head is positioned at above V-type groove slide unit, just to the groove location of V-type groove slide unit.

3. helical pitch detector according to claim 1, it is characterized in that: be provided with laser interferometer on the right side of described main engine bed, described laser interferometer is towards main engine bed position.

4. helical pitch detector according to claim 1, is characterized in that: described clamping device is a pair certain lateral separation of phase mutual and the adjustable fixture in position, is respectively the first fixture and the second fixture.

5. helical pitch detector according to claim 4, it is characterized in that: described first fixture comprises the first clamping screw and the first locking pressure plate, described first locking pressure plate two ends are arranged at V-type chute platform two ends, described first clamping screw radial direction is arranged at the first locking pressure plate center, and this first clamping screw aims at V-type chute platform groove location through the first locking pressure plate.

6. helical pitch detector according to claim 4, it is characterized in that: described second fixture comprises the second clamping screw and the second locking pressure plate, described second locking pressure plate two ends are arranged at V-type chute platform two ends, described second clamping screw radial direction is arranged at the second locking pressure plate center, and this second clamping screw aims at V-type chute platform groove location through the second locking pressure plate.