Online measuring mechanism of machine tool

Abstract

The utility model discloses a machine tool on-line measuring mechanism, which belongs to the technical field of machine tool auxiliary equipment and comprises a base frame and a conveying line. A support is fixedly installed on the base frame, and a first detection mechanism used for detecting the tooth number and the tooth precision is installed on the support. A second detection mechanism for detecting the straightness of the rack is arranged on the conveying line; the first detection mechanism comprises a transmission assembly and a linear read-write assembly. In the embodiment of the utility model, the rack processed by the machine tool is transferred to the conveying line, the rack moves towards the discharging end on the conveying line, the rack is clamped and limited by the second detection mechanism, and the straightness of the rack is detected by the second detection mechanism; meanwhile, the rack drives the transmission assembly to operate in the moving process, the transmission assembly drives the linear read-write assembly to move, tooth number detection of the rack is converted into displacement detection of the linear read-write assembly, the detection speed is high, the detection precision is high, the detection efficiency is greatly improved, and continuous machining of the machine tool on the rack is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool auxiliary equipment, in particular to an online measuring mechanism for a machine tool. Background Art

[0002] Racks are usually made of metal and are widely used in the field of mechanical equipment, such as CNC machine tools, printing presses, textile machines, cranes, etc. They play an important role in industrial production and can achieve precise motion transmission and position control.

[0003] In the existing rack processing technology, it is necessary to select suitable materials for pretreatment, and then use milling machines, lathes and other machine tools to rough-process the materials to obtain a preliminary rack shape. The heat-treated rack is then fine-processed by grinders, gear hobbing and other machine tools. The fine-processed rack can be functionally inspected after chamfering and other processes to check whether the rack's dimensional accuracy, tooth shape accuracy, surface quality and other characteristics meet the set requirements.

[0004] For example, the patent with publication number CN212390951U discloses a rack pitch detector. This utility model can directly read data through the digital display ruler during measurement through the arrangement of a micrometer, a digital display ruler and an adjustment mechanism. However, the detection efficiency of this detection device is poor, and it is impossible to perform online measurement of the finished rack after machine tool processing, and it is difficult to simultaneously detect data such as the number of teeth of the rack.

[0005] Based on this, the utility model designs an online measuring mechanism for a machine tool to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide an online measuring mechanism for a machine tool to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an online measuring mechanism for a machine tool, comprising a base frame and a conveying line;

[0008] A bracket is fixedly mounted on the base frame, and a first detection mechanism for detecting the number of teeth and the tooth accuracy is mounted on the bracket;

[0009] The conveyor line is provided with a second detection mechanism for detecting the straightness of the rack;

[0010] The first detection mechanism comprises a transmission assembly and a linear reading and writing assembly, the transmission assembly and the linear reading and writing assembly are mounted on a bracket, and the transmission assembly and the linear reading and writing assembly are transmission-connected.

[0011] Preferably: the linear reading and writing assembly includes a linear guide, a slider, a reading and writing head and a grating ruler, the linear guide is fixedly mounted on the bracket, the slider is connected to the linear guide in a limited sliding manner; the grating ruler is arranged on one side of the linear guide; the slider is fixedly mounted with a reading and writing head for cooperating with the grating ruler to measure distance.

[0012] Preferably: the transmission assembly includes a connecting plate, a gear, a first connecting rod and a second connecting rod, the gear is rotatably mounted on the bracket through a bearing, and the gear is meshingly connected with the rack; the first connecting rod is fixedly mounted at the eccentric part of the gear, the second connecting rod is fixedly mounted on the slider, and the two ends of the connecting plate are rotatably connected to the first connecting rod and the second connecting rod respectively.

[0013] Preferably: the second detection mechanism includes a motor, a bidirectional threaded rod, a belt and pulley transmission structure, a positioning assembly and a detection assembly, the two bidirectional threaded rods are arranged on both sides of the conveyor line and are rotatably connected to the base frame through bearings, the motor is fixedly connected to the base frame, and the output end of the motor is fixedly connected to the bidirectional threaded rod; the two bidirectional threaded rods are transmission-connected through the belt and pulley transmission structure; the positioning assembly and the detection assembly are threadedly connected to the bidirectional threaded rod through a threaded sleeve, and the positioning assembly and the detection assembly are symmetrically arranged front to back.

[0014] Preferably, the positioning assembly comprises a movable plate, a connecting frame and a material guide roller, the movable plate is threadedly connected to the bidirectional threaded rod through a threaded sleeve, the connecting frame is fixedly connected to the movable plate, and the material guide roller is rotatably connected to the connecting frame through a bearing.

[0015] Preferably: the detection assembly includes a movable plate, a connecting frame, a material guide roller, a floating spring and a floating slide rod. The movable plate is threadedly connected to the bidirectional threaded rod through a threaded sleeve, the connecting frame is fixedly connected to the floating slide rod, the floating slide rod is limitedly slidably connected to the movable plate, and a floating spring is fixedly installed between the movable plate and the connecting frame.

[0016] Preferably, the detection component further comprises a sensor, and the movable plate is fixedly provided with a sensor for monitoring whether the floating slide bar moves.

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

[0018] In the utility model, the rack processed by the machine tool is transferred to the conveyor line, and the rack moves toward the discharge end on the conveyor line. The rack is clamped and limited by the second detection mechanism, and the second detection mechanism detects the straightness of the rack; at the same time, the rack drives the transmission component to operate during movement, and the transmission component drives the linear reading and writing component to move, and the detection of the number of teeth on the rack is converted into the detection of the displacement of the linear reading and writing component. Not only the detection speed is fast, but also the detection accuracy is high, which greatly increases the detection efficiency and ensures the continuous processing of the rack by the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a machine tool online measuring mechanism main structure three-dimensional Figure 1 ;

[0020] Figure 2 The utility model is a machine tool online measuring mechanism main structure three-dimensional Figure 2 ;

[0021] Figure 3 This is a front view of the structure of an online measuring mechanism for a machine tool according to the utility model;

[0022] Figure 4 This is a left view of the structure of an online measuring mechanism for a machine tool according to the utility model;

[0023] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0024] In the figure: 1. base frame; 2. first detection mechanism; 21. transmission assembly; 211. connecting plate; 212. gear; 213. first connecting rod; 214. second connecting rod; 22. linear reading and writing assembly; 221. linear guide rail; 222. slider; 223. reading and writing head; 224. grating ruler; 3. second detection mechanism; 31. motor; 32. bidirectional threaded rod; 33. pulley and belt transmission structure; 34. movable plate; 35. connecting frame; 36. guide roller; 37. floating spring; 38. floating slide rod; 39. sensor; 3a. positioning assembly; 3b. detection assembly; 4. conveyor line; 5. rack 6. bracket. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] Please refer to the instruction manual Figure 1-4 , an online measuring mechanism for a machine tool, comprising a base frame 1 and a conveying line 4;

[0028] A bracket 6 is fixedly mounted on the base frame 1, and a first detection mechanism 2 for detecting the number of teeth and the tooth accuracy is mounted on the bracket 6;

[0029] The conveyor line 4 is provided with a second detection mechanism 3 for detecting the straightness of the rack;

[0030] The first detection mechanism 2 includes a transmission component 21 and a linear reading and writing component 22, the transmission component 21 and the linear reading and writing component 22 are installed on the bracket 6, and the transmission component 21 and the linear reading and writing component 22 are transmission-connected;

[0031] In the embodiment of the utility model, the rack 5 processed by the machine tool is transferred to the conveyor line 4, and the rack 5 moves toward the discharge end on the conveyor line 4. The rack 5 is clamped and limited by the second detection mechanism 3, and the second detection mechanism 3 detects the straightness of the rack 5; at the same time, the rack 5 drives the transmission component 21 to operate during movement, and the transmission component 21 drives the linear reading and writing component 22 to move, and converts the number of teeth detection of the rack 5 into the displacement detection of the linear reading and writing component 22. Not only the detection speed is fast, but also the detection accuracy is high, which greatly increases the detection efficiency and ensures the continuous processing of the rack by the machine tool.

[0032] The linear reading and writing assembly 22 includes a linear guide rail 221, a slider 222, a reading and writing head 223 and a grating ruler 224. The linear guide rail 221 is fixedly mounted on the bracket 6, and the slider 222 is connected to the linear guide rail 221 by limited sliding. The grating ruler 224 is arranged on one side of the linear guide rail 221. The slider 222 is fixedly mounted with a reading and writing head 223 for cooperating with the grating ruler 224 to measure distance.

[0033] The transmission assembly 21 includes a connecting plate 211, a gear 212, a first connecting rod 213 and a second connecting rod 214. The gear 212 is rotatably mounted on the bracket 6 through a bearing, and the gear 212 is meshed and connected with the rack 5. The first connecting rod 213 is fixedly mounted at the eccentric part of the gear 212, and the second connecting rod 214 is fixedly mounted on the slider 222. Both ends of the connecting plate 211 are rotatably connected to the first connecting rod 213 and the second connecting rod 214 respectively.

[0034] When the first detection mechanism 2 works normally, the rack 5 moves toward the discharge end on the conveyor line 4 until the rack 5 contacts the gear 212 and drives the gear 212 to rotate. The gear 212 drives the second connecting rod 214 to move through the first connecting rod 213 and the connecting plate 211, and drives the slider 222 to make reciprocating linear motion under the limiting action of the linear guide 221. While the slider 222 moves, it drives the read-write head 223 to move on the grating scale 224, thereby realizing the conversion of the measurement of the number of teeth of the rack 5 into the measurement of the displacement of the slider 222, so that the detection of the number of teeth of the rack 5 is fast and accurate, and the tooth accuracy of the rack 5 can be judged through the rotation state of the gear 212, which greatly facilitates the detection of the rack 5.

[0035] The second detection mechanism 3 includes a motor 31, a bidirectional threaded rod 32, a belt and pulley transmission structure 33, a positioning assembly 3a and a detection assembly 3b. The two bidirectional threaded rods 32 are arranged on both sides of the conveyor line 4 and are rotatably connected to the base frame 1 through bearings. The motor 31 is fixedly connected to the base frame 1, and the output end of the motor 31 is fixedly connected to the bidirectional threaded rod 32; the two bidirectional threaded rods 32 are transmission-connected through the belt and pulley transmission structure 33; the positioning assembly 3a and the detection assembly 3b are threadedly connected to the bidirectional threaded rod 32 through threaded sleeves, and the positioning assembly 3a and the detection assembly 3b are symmetrically arranged front and back;

[0036] The positioning assembly 3a includes a movable plate 34, a connecting frame 35 and a guide roller 36. The movable plate 34 is threadedly connected to the bidirectional threaded rod 32 through a threaded sleeve, the connecting frame 35 is fixedly connected to the movable plate 34, and the guide roller 36 is rotatably connected to the connecting frame 35 through a bearing.

[0037] The detection assembly 3b includes a movable plate 34, a connecting frame 35, a guide roller 36, a floating spring 37, a floating slide bar 38 and a sensor 39. The movable plate 34 is threadedly connected to the bidirectional threaded rod 32 through a threaded sleeve, the connecting frame 35 is fixedly connected to the floating slide bar 38, the floating slide bar 38 is limitedly slidably connected to the movable plate 34, and a floating spring 37 is fixedly installed between the movable plate 34 and the connecting frame 35; a sensor 39 for monitoring the displacement of the floating slide bar 38 is fixedly installed on the movable plate 34;

[0038] When the second detection mechanism 3 works normally, the starting motor 31 drives the bidirectional threaded rod 32 to rotate, and the two bidirectional threaded rods 32 are connected to the pulley transmission structure 33 through a belt; the bidirectional threaded rod 32 drives the movable plates 34 on both sides to approach the rack 5 to clamp and fix the rack 5, and assists the movement of the rack 5 through the guide roller 36; the positioning component 3a is used to locate the position of the rack 5. When there is a bend at a certain point of the rack 5, the guide roller 36 of the detection component 3b is activated to drive the connecting frame 35 to move, and the sensor 39 is used to monitor whether the floating slide bar 38 is displaced, thereby confirming the straightness of the rack 5, and the floating spring 37 always pushes the connecting frame 35, so that the detection component 3b always presses the side wall of the rack 5.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A machine tool online measurement mechanism, comprising a base frame (1) and a conveyor line (4), characterized in that: A bracket (6) is fixedly mounted on the base frame (1), and a first detection mechanism (2) for detecting the number of teeth and the tooth accuracy is mounted on the bracket (6); The conveyor line (4) is provided with a second detection mechanism (3) for detecting the straightness of the rack; The first detection mechanism (2) comprises a transmission component (21) and a linear reading and writing component (22); the transmission component (21) and the linear reading and writing component (22) are mounted on a bracket (6), and the transmission component (21) and the linear reading and writing component (22) are in transmission connection.

2. The machine tool online measurement mechanism according to claim 1, characterized in that: The linear reading and writing assembly (22) comprises a linear guide rail (221), a slider (222), a reading and writing head (223) and a grating ruler (224); the linear guide rail (221) is fixedly mounted on a bracket (6); the slider (222) is connected to the linear guide rail (221) in a limited sliding manner; the grating ruler (224) is arranged on one side of the linear guide rail (221); and the reading and writing head (223) for cooperating with the grating ruler (224) for distance measurement is fixedly mounted on the slider (222).

3. The machine tool online measurement mechanism according to claim 2, characterized in that: The transmission assembly (21) comprises a connecting plate (211), a gear (212), a first connecting rod (213) and a second connecting rod (214); the gear (212) is rotatably mounted on a bracket (6) via a bearing; the gear (212) is meshingly connected to a rack (5); the first connecting rod (213) is fixedly mounted at an eccentric position of the gear (212); the second connecting rod (214) is fixedly mounted on a slider (222); and both ends of the connecting plate (211) are rotatably connected to the first connecting rod (213) and the second connecting rod (214) respectively.

4. The machine tool online measurement mechanism according to claim 2, characterized in that: The second detection mechanism (3) comprises a motor (31), a bidirectional threaded rod (32), a belt and pulley transmission structure (33), a positioning assembly (3a) and a detection assembly (3b); the two bidirectional threaded rods (32) are arranged on both sides of the conveyor line (4) and are rotatably connected to the base frame (1) through bearings; the motor (31) is fixedly connected to the base frame (1); the output end of the motor (31) is fixedly connected to the bidirectional threaded rod (32); the two bidirectional threaded rods (32) are transmission-connected through the belt and pulley transmission structure (33); the positioning assembly (3a) and the detection assembly (3b) are threadedly connected to the bidirectional threaded rod (32) through threaded sleeves; the positioning assembly (3a) and the detection assembly (3b) are symmetrically arranged front to back.

5. The machine tool online measurement mechanism according to claim 4, characterized in that: The positioning assembly (3a) comprises a movable plate (34), a connecting frame (35) and a material guide roller (36); the movable plate (34) is threadedly connected to the bidirectional threaded rod (32) via a threaded sleeve; the connecting frame (35) is fixedly connected to the movable plate (34); and the material guide roller (36) is rotatably connected to the connecting frame (35) via a bearing.

6. The machine tool online measuring mechanism according to claim 4, characterized in that: The detection component (3b) comprises a movable plate (34), a connecting frame (35), a material guide roller (36), a floating spring (37) and a floating slide bar (38); the movable plate (34) is threadedly connected to the bidirectional threaded rod (32) via a threaded sleeve; the connecting frame (35) is fixedly connected to the floating slide bar (38); the floating slide bar (38) is limitedly slidably connected to the movable plate (34); and a floating spring (37) is fixedly installed between the movable plate (34) and the connecting frame (35).

7. The machine tool online measurement mechanism according to claim 6, characterized in that: The detection assembly (3b) further comprises a sensor (39), and the movable plate (34) is fixedly mounted with the sensor (39) for monitoring whether the floating slide bar (38) moves.

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