Material blocking device for numerical control screw tap sharpening machine

Abstract

The utility model relates to the technical field of numerical control screw tap sharpening machine tools, in particular to a material blocking device for a numerical control screw tap sharpening machine, which comprises a sharpening machine main body, a hopper is arranged on the rear side of the top of the sharpening machine main body, a material guiding plate is arranged in front of the hopper, and a material ejecting air cylinder is fixedly arranged on the left front portion of the top of the sharpening machine main body. A V-shaped groove is formed in the front side of the top of the sharpening machine body, rolling wheels are arranged on the right side of the sharpening machine body, and a material blocking assembly is fixedly installed on the right side of the sharpening machine body and comprises a base. According to the utility model, the problem that the workpiece is scrapped due to the fact that the tip part of the counter center is abraded off because the workpiece is not retreated in time is solved, the original rear positioning mode is changed into front-end positioning by additionally arranging the material blocking assembly, and the material blocking device extends out in the feeding process, so that the positioning time is shortened, unmanned control of a machine tool is realized, the labor intensity of an operator is improved, and the efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of CNC tap grinding machine technology, specifically a material blocking device for a CNC tap grinding machine. Background Technology

[0002] A tap is a tool used to machine internal threads. During the tap machining process, a CNC tap grinding machine is required. A CNC tap grinding machine is a special machine tool used to grind the reverse center of a tap.

[0003] A search revealed that the announcement number is CN219212513U, and the name is a CNC tap tip grinding machine, including a machine bed. Through research and analysis, it was found that although this device can grind the front and rear cutting edge difference by using the X-axis slide table in conjunction with the rotation linkage of the A-axis, and can be programmed to perform grinding according to the product process requirements for the tap tip, with high precision and convenient operation, it still has the following disadvantages to a certain extent.

[0004] For example, after the piston rod of the pusher cylinder extends, the tap's stopping position will deviate. Existing tap grinding machines rely on the pressure roller to press the workpiece, and then the roller, pressure roller, and workpiece rotate together to make the workpiece retreat to the top position. The retreat speed is slow, and the grinding wheel waits too long for grinding. Due to the deviation in the tap's position, the pusher cylinder causes the tap to stop at different positions, which makes it easy for the grinding wheel to grind off the 90° reverse tip of the tap. In order to solve the above technical problems, we have designed a material blocking device for CNC tap grinding machines. Utility Model Content

[0005] The purpose of this utility model is to provide a material blocking device for a CNC tap grinding machine, which has the advantage of improving the grinding efficiency of the tap back tip and solving the problem that the workpiece is scrapped because the back tip is not ground off in time due to the workpiece not retracting in time.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a material-stopping device for a CNC tap grinding machine, comprising a grinding machine body, a hopper disposed on the rear side of the top of the grinding machine body, a guide plate disposed in front of the hopper, a top-loading cylinder fixedly installed on the left front of the top of the grinding machine body, a V-groove disposed on the front side of the top of the grinding machine body, a roller disposed on the right side of the grinding machine body, a material-stopping assembly fixedly installed on the right side of the grinding machine body, the material-stopping assembly comprising a base, the base being fixedly installed on the rear right side of the grinding machine body, a cylinder seat fixedly installed on the surface of the base, a material-stopping cylinder fixedly installed in the inner cavity of the cylinder seat, a material-stopping block fixedly connected to the telescopic end of the material-stopping cylinder, a bolt penetrating through the front side of the material-stopping block, a fixing plate disposed on the front side of the material-stopping block, an inductive switch fixedly installed on the left side of the fixing plate, a screw penetrating through the rear side of the top of the material-stopping block, the bottom of the screw penetrating to the bottom of the material-stopping block and mounted with a support plate.

[0007] Preferably, there are two rollers. A motor is fixedly installed on the left side of the grinding machine body. The output shaft of the motor is fixedly connected to the front roller. The rear roller rotates synchronously with the front roller through gear meshing.

[0008] Preferably, the V-groove is disposed between two rollers, and a workpiece is disposed inside the V-groove.

[0009] Preferably, the front side of the baffle block is provided with a placement groove, the fixing plate is located inside the placement groove, and one end of the bolt passes through the interior of the placement groove and is in close contact with the surface of the fixing plate.

[0010] Preferably, the support plate is located below the placement groove, and the bottom of the screw is rotatably connected to the top of the support plate via a bearing.

[0011] Preferably, the surface of the screw is threaded to the connection point of the stop block, and a guide rod is fixedly connected to the front side of the top of the support plate. The top of the guide rod extends through to the top of the stop block and is in sliding contact with the connection point thereto.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model changes the original rear positioning method to front positioning by adding a material blocking component. The material blocking device extends during the feeding process, which shortens the positioning time. The machine tool can achieve unmanned control, improve the operator's labor intensity and increase efficiency.

[0014] 2. This utility model installs the inductive switch on a fixed plate and places it inside the stop block, fixing it with bolts. This allows the inductive switch to be quickly assembled and disassembled. Furthermore, the height of the inductive switch can be adjusted by using a screw to drive the support plate up and down, thus adapting to the machining of taps of different sizes and improving the applicability of the stop device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0017] Figure 3 This is a three-dimensional schematic diagram of a partial structure of the material-blocking component of this utility model. Figure 1 ;

[0018] Figure 4 This is a three-dimensional schematic diagram of a partial structure of the material-blocking component of this utility model. Figure 2 ;

[0019] Figure 5 This is a three-dimensional schematic diagram of a partial structure of the material-blocking component of this utility model. Figure 3 .

[0020] In the diagram: 1. Grinding machine body; 2. Top material cylinder; 3. Guide plate; 4. Hopper; 5. V-groove; 6. Roller; 7. Workpiece; 8. Material blocking assembly; 81. Base; 82. Cylinder seat; 83. Material blocking cylinder; 84. Material blocking block; 85. Screw; 86. Bolt; 87. Fixing plate; 88. Inductive switch; 89. Guide rod; 810. Support plate. Detailed Implementation

[0021] Please see Figures 1-5A material-stopping device for a CNC tap grinding machine includes a grinding machine body 1, a hopper 4 disposed on the rear side of the top of the grinding machine body 1, a guide plate 3 disposed in front of the hopper 4, a top-loading cylinder 2 fixedly installed on the front left side of the top of the grinding machine body 1, a V-groove 5 disposed on the front side of the top of the grinding machine body 1, a roller 6 disposed on the right side of the grinding machine body 1, and a material-stopping assembly 8 fixedly installed on the right side of the grinding machine body 1. The material-stopping assembly 8 includes a base 81, which is fixedly installed on the rear right side of the grinding machine body 1, and a cylinder seat 82 is fixedly installed on the surface of the base 81. A baffle cylinder 83 is fixedly installed in the inner cavity of the cylinder seat 82. A baffle block 84 is fixedly connected to the telescopic end of the baffle cylinder 83. A bolt 86 is provided through the front side of the baffle block 84. By setting the bolt 86, the fixing plate 87 can be easily fixed in the placement slot, so as to realize the quick installation of the inductive switch 88. A fixing plate 87 is provided on the front side of the baffle block 84. An inductive switch 88 is fixedly installed on the left side of the fixing plate 87. A screw 85 is provided through the rear side of the top of the baffle block 84. The bottom of the screw 85 extends to the bottom of the baffle block 84 and a support plate 810 is installed thereon.

[0022] Please see Figure 1 and Figure 2 There are two rollers 6. A motor is fixedly installed on the left side of the main body 1 of the grinding machine. The output shaft of the motor is fixedly connected to the front roller 6. The rear roller 6 rotates synchronously with the front roller 6 through gear meshing.

[0023] Please see Figure 1 The V-groove 5 is located between two rollers 6, and the workpiece 7 is located inside the V-groove 5.

[0024] Please see Figure 3 , Figure 4 and Figure 5 The front side of the baffle block 84 is provided with a placement groove. By setting the placement groove, the fixing plate 87 can be installed and placed to prevent the induction switch 88 from being squeezed and shaking during the baffle process. The fixing plate 87 is located inside the placement groove, and one end of the bolt 86 passes through the interior of the placement groove and is in close contact with the surface of the fixing plate 87.

[0025] Please see Figure 5 The support plate 810 is located below the placement groove. By setting the support plate 810, the fixing plate 87 can be supported, so that it can be placed stably during installation and then fixed without the need for manual support. The support plate 810 can be height adjusted by the screw 85, so that the induction switch 88 can be raised and lowered to different heights and can accommodate taps of different sizes. The bottom of the screw 85 is rotatably connected to the top of the support plate 810 through a bearing.

[0026] Please see Figure 5The surface of the screw 85 is threadedly connected to the stop block 84. A guide rod 89 is fixedly connected to the front side of the top of the support plate 810. By setting the guide rod 89, the movement of the support plate 810 can be limited to prevent it from rotating during its up and down movement. The top of the guide rod 89 extends through to the top of the stop block 84 and is in sliding contact with it at the connection point.

[0027] In operation, the tap is carried by the hopper 4 through the rotating wheel into the guide plate 3 and falls into the V-groove 5. The stop cylinder 83 receives a signal from the PLC, and its piston rod extends. The tap, now in the V-groove 5, is pushed out by the ejector cylinder 2 onto the rotating roller 6. The front of the workpiece 7 contacts the inductive switch 88 on the stop cylinder 83. After the ejector cylinder 2 reaches its position, it sends a signal to the PLC. The PLC, upon receiving the position signal, sends a retraction signal, and the stop cylinder 83 retracts. One working cycle of the stop cylinder 83 is completed, improving efficiency. The grinding efficiency of the tap reverse tip is improved, and the waiting time is reduced from 10 seconds to 4 seconds, a reduction of 60%. The pass rate of the tap reverse tip is increased from 75% to 98%. When the height of the inductive switch 88 needs to be adjusted, the screw 85 is rotated, and the support plate 810 is raised and lowered under the action of the thread, thereby adjusting the height of the inductive switch 88 so that the position of the inductive switch 88 can be adapted to the height of the tap. When the inductive switch 88 needs to be disassembled, the bolt 86 is unscrewed, and it can be moved out of the placement slot.

[0028] In summary, the material-stopping device for CNC tap grinding machines, through the cooperation of the grinding machine body 1, the top cylinder 2, the V-groove 5, the roller 6 and the material-stopping assembly 8, solves the problem of workpieces not retracting in time, resulting in the tip of the reverse tip being ground off and the workpiece being scrapped.

Claims

1. A material blocking device for a numerical control tap sharpener, comprising a sharpener body (1), characterized in that: A hopper (4) is provided on the rear side of the top of the grinding mill body (1), and a guide plate (3) is provided in front of the hopper (4). A top material cylinder (2) is fixedly installed on the left front of the top of the grinding mill body (1). A V-groove (5) is provided on the front side of the top of the grinding mill body (1). A roller (6) is provided on the right side of the grinding mill body (1). A baffle assembly (8) is fixedly installed on the right side of the grinding mill body (1). The baffle assembly (8) includes a base (81). The base (81) is fixedly installed on the rear right side of the grinding mill body (1). The surface of the base (81) A cylinder seat (82) is fixedly installed, and a baffle cylinder (83) is fixedly installed in the inner cavity of the cylinder seat (82). A baffle block (84) is fixedly connected to the telescopic end of the baffle cylinder (83). A bolt (86) is provided through the front side of the baffle block (84). A fixing plate (87) is provided on the front side of the baffle block (84). An induction switch (88) is fixedly installed on the left side of the fixing plate (87). A screw (85) is provided through the rear side of the top of the baffle block (84). The bottom of the screw (85) extends through to the bottom of the baffle block (84) and is equipped with a support plate (810).

2. The material blocking device for the numerical control tap grinding machine according to claim 1, characterized in that: There are two rollers (6). A motor is fixedly installed on the left side of the grinding machine body (1). The output shaft of the motor is fixedly connected to the front roller (6). The rear roller (6) rotates synchronously with the front roller (6) through gear meshing.

3. The material blocking device for the numerical control tap grinding machine according to claim 1, characterized in that: The V-groove (5) is disposed between two rollers (6), and a workpiece (7) is disposed inside the V-groove (5).

4. A material-stopping device for a CNC tap grinding machine according to claim 1, characterized in that: The front side of the baffle block (84) is provided with a placement groove, the fixing plate (87) is located inside the placement groove, and one end of the bolt (86) penetrates into the interior of the placement groove and is in close contact with the surface of the fixing plate (87).

5. The material blocking device for the numerical control tap grinding machine according to claim 1, characterized in that: The support plate (810) is located below the placement groove, and the bottom of the screw (85) is rotatably connected to the top of the support plate (810) through a bearing.

6. A material blocking device for a numerical control tap sharpener according to claim 5, characterized in that: The surface of the screw (85) is threadedly connected to the connection of the stop block (84). A guide rod (89) is fixedly connected to the front side of the top of the support plate (810). The top of the guide rod (89) extends through to the top of the stop block (84) and is in sliding contact with its connection.

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