Numerical control screw tap grinding machine

Abstract

The utility model discloses a numerical control screw tap grinding machine which comprises a machine table, a transposition mechanism, a first clamping mechanism, a second clamping mechanism, a grinding wheel dresser and a grinding mechanism. The transposition mechanism comprises a linear guide rail, a linear motor and a transposition frame; the first clamping mechanism comprises a clamping box, a steering driving device and a clamping seat; the second clamping mechanism comprises a clamping frame, a clamping air cylinder, a clamping shaft and a clamping block. The clamping frame is arranged on the transposition frame in a sliding mode. The grinding wheel dresser is arranged on the transposition frame; the grinding mechanism comprises a grinding box, a swing angle motor, a swing angle frame, a grinding motor and a grinding wheel. During machining, a machined part can be firmly locked, and the final machining quality of the machined part is effectively guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool equipment, and specifically relates to a numerically controlled tap grinder. Background Art

[0002] With the rapid development of CNC machine tools, the requirements for thread tools are getting higher and higher. Taps, as the main tools for threaded hole processing, account for a high proportion in thread processing. The geometric accuracy of the tap is directly reflected on the workpiece being processed, so the requirements for machine tools for processing tap threads are extremely high. Taps are industrial consumables and are used in large quantities, so there are also high requirements for the processing efficiency of machine tools.

[0003] In order to adapt to the length of the workpiece, a movable tail ejector mechanism is usually provided on the CNC machine tool to clamp the other end of the workpiece. For example, the patent document with publication number CN204954503U discloses a fully automatic CNC tap and thread grinder, which is provided with a manually fine-tuned longitudinally movable ejector rack, which is used to manually move the ejector rack to clamp one end of the workpiece. However, the ejector rack can only be used to simply position the workpiece, and cannot further firmly lock the workpiece. Utility Model Content

[0004] The utility model provides a numerically controlled tap grinder to solve the above technical problems.

[0005] The solution adopted by the utility model to achieve its technical effect is:

[0006] A CNC tap grinder comprises a machine platform, a transposition mechanism, a first clamping mechanism, a second clamping mechanism, a grinding wheel dresser and a grinding mechanism; the transposition mechanism comprises a linear guide, a linear motor and a transposition frame; the linear guide is arranged on the machine platform; the linear motor is arranged in the linear guide; the transposition frame is slidably arranged on the linear guide, and the transposition frame is transmission-connected with the driving end of the linear motor; the first clamping mechanism comprises a clamping box, a steering drive device and a clamping seat; the clamping box is arranged on the transposition frame; the steering drive device is arranged in the clamping box; the clamping seat is rotationally arranged on one side of the clamping box, and the clamping seat is transmission-connected with the driving end of the steering drive device; the second clamping mechanism comprises a clamping frame, a clamping cylinder, a clamping shaft and a clamping block; the clamping frame is slidably arranged on the transposition frame; the clamping cylinder The cam is provided with a toothed structure, and the toothed structure is connected with the toothed structure to form a toothed structure, and the toothed structure is connected with the toothed structure to form a toothed structure.

[0007] Preferably, the second clamping mechanism includes a mounting frame, a guide shaft and a guide rod; the clamping cylinder is arranged on the mounting frame; the guide shaft is arranged in the mounting frame; the guide rod slides through the guide shaft, and one end of the guide rod is arranged on one side of the clamping block.

[0008] Preferably, the second clamping mechanism further comprises a guide rail; the guide rail is arranged on the transposition frame; and the clamping frame is slidably arranged on the guide rail.

[0009] Preferably, the second clamping mechanism also includes a locking device; the locking device includes a tensioning sleeve, an eccentric shaft and a tensioning plate; the tensioning sleeve is vertically slidably arranged at the bottom of the clamping frame; an eccentric hole is arranged on the tensioning sleeve; the eccentric shaft is rotatably arranged in the clamping frame, and the eccentric shaft passes through the eccentric hole; a limiting groove is arranged on the guide rail; the tensioning plate is slidably arranged in the limiting groove; the tensioning plate is arranged at the bottom of the tensioning sleeve.

[0010] Preferably, the locking device further comprises a locking motor; the locking motor is arranged on one side of the clamping frame; and the eccentric shaft is drivingly connected to the driving end of the locking motor.

[0011] The beneficial effects of the utility model are as follows: a second clamping mechanism is provided, and when a workpiece needs to be clamped, one end of the workpiece can be mounted on the clamping seat, and then the clamping frame is pushed to move so that the clamping shaft clamps the other end of the workpiece, and finally the clamping block is driven to move by the clamping cylinder, driving the clamping shaft to push toward the workpiece, and the workpiece is firmly clamped between the clamping seat and the clamping shaft, thereby preventing the workpiece from loosening during the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an overall schematic diagram of a CNC tap grinder disclosed in an embodiment of the utility model;

[0013] Figure 2 A schematic diagram of a transposition mechanism disclosed in an embodiment of the utility model;

[0014] Figure 3 This is an external schematic diagram of the second clamping mechanism disclosed in the embodiment of the utility model;

[0015] Figure 4 This is a schematic diagram of the interior of the second clamping mechanism disclosed in an embodiment of the utility model.

[0016] Label description: 1-machine table, 2-grinding wheel dresser, 3-linear guide, 4-linear motor, 5-positioning frame, 6-clamping box, 7-steering drive device, 8-clamping seat, 9-clamping frame, 10-clamping cylinder, 11-clamping shaft, 12-clamping block, 13-grinding box, 14-swing angle motor, 15-swing angle frame, 16-grinding motor, 17-grinding wheel, 18-mounting frame, 19-guide shaft, 20-guide rod, 21-guide rail, 22-tensioning sleeve, 23-eccentric shaft, 24-tensioning plate, 25-limiting groove, 26-locking motor. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. It should be noted that when an element is referred to as "fixed on" or "set on" another element, it can be directly on the other element or there may be a centering element at the same time. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there may be a centering element at the same time. When an element is referred to as being "fixedly connected to" another element, it can be a common fixed connection method such as welding, bolting or gluing.

[0018] Please refer to Figure 1-4 In a preferred embodiment of the utility model, a CNC tap grinder is disclosed, comprising a machine table 1, a transposition mechanism, a first clamping mechanism, a second clamping mechanism, a grinding wheel dresser 2 and a grinding mechanism; the transposition mechanism comprises a linear guide 3, a linear motor 4 and a transposition frame 5; the linear guide 3 is arranged on the machine table 1; the linear motor 4 is arranged in the linear guide 3; the transposition frame 5 is slidably arranged on the linear guide 3, and the transposition frame 5 is transmission-connected with the driving end of the linear motor 4; the first clamping mechanism The mechanism includes a clamping box 6, a steering drive device 7 and a clamping seat 8; the clamping box 6 is arranged on the transposition frame 5; the steering drive device 7 is arranged in the clamping box 6; the clamping seat 8 is rotatably arranged on one side of the clamping box 6, and the clamping seat 8 is transmission-connected with the driving end of the steering drive device 7; the second clamping mechanism includes a clamping frame 9, a clamping cylinder 10, a clamping shaft 11 and a clamping block 12; the clamping frame 9 is slidably arranged on the transposition frame 5; the clamping cylinder 10 is arranged on The clamping frame 9; the clamping shaft 11 is slidably arranged on the clamping frame 9, and the clamping hole of the clamping shaft 11 is opposite to the clamping hole of the clamping seat 8; one end of the clamping block 12 is connected to the telescopic end of the clamping cylinder 10; the other end of the clamping block 12 is sleeved on the outside of the clamping shaft 11; the grinding wheel dresser 2 is arranged on the transposition frame 5; the grinding mechanism includes a grinding box 13, a swing angle motor 14, a swing angle frame 15, a grinding motor 16 and a grinding wheel 17; the grinding box 13 is arranged On the machine 1; the swing angle motor 14 is arranged on one side of the polishing box 13; the swing angle frame 15 is rotatably arranged at one end of the polishing box 13, and the swing angle frame 15 is transmission connected with the driving end of the swing angle motor 14; the polishing motor 16 is arranged on one side of the swing angle frame 15; the grinding wheel 17 is rotatably arranged on one side of the swing angle frame 15, and the grinding wheel 17 is transmission connected with the driving end of the polishing motor 16; the grinding wheel 17 is located above one side of the transposition frame 5.

[0019] Specifically, the second clamping mechanism includes a mounting frame 18, a guide shaft 19 and a guide rod 20; the clamping cylinder 10 is arranged on the mounting frame 18; the guide shaft 19 is arranged in the mounting frame 18; the guide rod 20 slides through the guide shaft 19, and one end of the guide rod 20 is arranged on one side of the clamping block 12.

[0020] Specifically, the second clamping mechanism further includes a guide rail 21 ; the guide rail 21 is disposed on the transposition frame 5 ; and the clamping frame 9 is slidably disposed on the guide rail 21 .

[0021] Specifically, the second clamping mechanism also includes a locking device; the locking device includes a tensioning sleeve 22, an eccentric shaft 23 and a tensioning plate 24; the tensioning sleeve 22 is vertically slidably arranged at the bottom of the clamping frame 9; an eccentric hole is arranged on the tensioning sleeve 22; the eccentric shaft 23 is rotatably arranged in the clamping frame 9, and the eccentric shaft 23 passes through the eccentric hole; a limiting groove 25 is arranged on the guide rail 21; the tensioning plate 24 is slidably arranged in the limiting groove 25; the tensioning plate 24 is arranged at the bottom of the tensioning sleeve 22.

[0022] Specifically, the locking device further includes a locking motor 26 ; the locking motor 26 is disposed on one side of the clamping frame 9 ; and the eccentric shaft 23 is drivingly connected to a driving end of the locking motor 26 .

[0023] Specifically, another set of shifting mechanisms is provided at the bottom of the grinding box 13 for driving the grinding wheel 17 to move closer to or away from the workpiece.

[0024] It can be seen from the above description that the utility model can firmly lock the workpiece during processing, thereby effectively improving the processing quality.

[0025] The preferred embodiments of the present invention are described in detail above in conjunction with the drawings in the specification. It should be noted that the protection scope of the present invention includes but is not limited to the above embodiments. The specific structures disclosed in the drawings in the specification are only preferred embodiments of the present invention. Technical personnel in the field can also develop other embodiments on this basis. Any simple deformation or equivalent substitution that does not deviate from the innovative concept of the present invention is covered by the present invention and belongs to the protection scope of the present invention.

Claims

1. CNC tap grinder, characterized in that: include: Machine; Transposition mechanism; the transposition mechanism comprises a linear guide rail, a linear motor and a transposition frame; the linear guide rail is arranged on the machine platform; the linear motor is arranged in the linear guide rail; the transposition frame is slidably arranged on the linear guide rail, and the transposition frame is drivingly connected to the driving end of the linear motor; A first clamping mechanism; the first clamping mechanism comprises a clamping box, a steering drive device and a clamping seat; the clamping box is arranged on the transposition frame; the steering drive device is arranged in the clamping box; the clamping seat is rotatably arranged on one side of the clamping box, and the clamping seat is drivingly connected to the driving end of the steering drive device; The second clamping mechanism; the second clamping mechanism comprises a clamping frame, a clamping cylinder, a clamping shaft and a clamping block; the clamping frame is slidably arranged on the transposition frame; the clamping cylinder is arranged on the clamping frame; the clamping shaft is slidably arranged on the clamping frame, and the clamping hole of the clamping shaft is directly opposite to the clamping hole of the clamping seat; one end of the clamping block is connected to the telescopic end of the clamping cylinder; the other end of the clamping block is sleeved on the outer side of the clamping shaft; A grinding wheel dresser; the grinding wheel dresser is arranged on the transposition frame; Grinding mechanism; the grinding mechanism includes a grinding box, a swing angle motor, a swing angle frame, a grinding motor and a grinding wheel; the grinding box is arranged on the machine platform; the swing angle motor is arranged on one side of the grinding box; the swing angle frame is rotatably arranged at one end of the grinding box, and the swing angle frame is transmission-connected to the driving end of the swing angle motor; the grinding motor is arranged on one side of the swing angle frame; the grinding wheel is rotatably arranged on one side of the swing angle frame, and the grinding wheel is transmission-connected to the driving end of the grinding motor; the grinding wheel is located above one side of the transposition frame.

2. The CNC tap grinder according to claim 1, characterized in that: The second clamping mechanism includes a mounting frame, a guide shaft and a guide rod; the clamping cylinder is arranged on the mounting frame; the guide shaft is arranged in the mounting frame; the guide rod slides through the guide shaft, and one end of the guide rod is arranged on one side of the clamping block.

3. The CNC tap grinder according to claim 1, characterized in that: The second clamping mechanism further comprises a guide rail; the guide rail is arranged on the transposition frame; the clamping frame is slidably arranged on the guide rail.

4. The CNC tap grinder according to claim 3, characterized in that: The second clamping mechanism also includes a locking device; the locking device includes a tensioning sleeve, an eccentric shaft and a tensioning plate; the tensioning sleeve is vertically slidably arranged at the bottom of the clamping frame; an eccentric hole is arranged on the tensioning sleeve; the eccentric shaft is rotatably arranged in the clamping frame, and the eccentric shaft passes through the eccentric hole; a limiting groove is arranged on the guide rail; the tensioning plate is slidably arranged in the limiting groove; the tensioning plate is arranged at the bottom of the tensioning sleeve.

5. The CNC tap grinder according to claim 4, characterized in that: The locking device also includes a locking motor; the locking motor is arranged on one side of the clamping frame; the eccentric shaft is drivingly connected to the driving end of the locking motor.

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