Horizontal hydraulic tool rest

Abstract

The horizontal hydraulic tool rest comprises a body and an electrical control system, a rear cover is installed at the rear end of the body, a main shaft is rotationally connected into the body, a movable fluted disc is fixedly installed at the front end of the main shaft, a fixed fluted disc is arranged on one side of the movable fluted disc, and a duplex fluted disc is arranged on one side of the movable fluted disc and one side of the fixed fluted disc. A duplex fluted disc is installed on the main shaft, a signal sending rod is installed on one side of the duplex fluted disc, the main shaft is in transmission connection with a cam shaft through a gear, the end of the cam shaft is fixedly connected with a hydraulic motor, a coarse positioning pin is installed in the body, and a first throttling valve is arranged on one side of the coarse positioning pin. The horizontal hydraulic tool rest is driven by the hydraulic motor, has the characteristics of simple structure, high rigidity, high reliability, suitability for connection of various numerical control systems and simple interface, can select tools nearby, has large hydraulic locking force, is suitable for heavy cutting, and effectively improves the machining capacity and the machining efficiency of a machine tool.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic tool holders, in particular to a horizontal hydraulic tool holder. Background Art

[0002] A CNC thread turning machine is a modern machine tool that is controlled by a computer program and can automatically, efficiently and precisely process various threads. The tool holder is an important functional component of the CNC thread turning machine and is used to install cutting tools. In the existing technology, the tool holder on the CNC thread turning machine is difficult to select the tool nearby, and the insufficient locking force makes it difficult to adapt to heavy cutting operations, resulting in suboptimal processing capacity and efficiency of the machine tool. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides a horizontal hydraulic tool holder, which solves the problem that the tool holder on the CNC thread turning machine is difficult to select the tool nearby, the locking force is insufficient to adapt to heavy cutting operations, and the processing capacity and processing efficiency of the machine tool are not ideal.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A horizontal hydraulic tool holder includes a body and an electrical control system; A rear cover is installed at the rear end of the body, a main shaft is rotatably connected inside the body, a movable gear plate is fixedly installed at the front end of the main shaft, a fixed gear plate is provided on one side of the movable gear plate, a double gear plate is provided on one side of the movable gear plate and the fixed gear plate, a sending rod is installed on one side of the double gear plate, the main shaft is connected to the camshaft through a gear transmission, the end of the camshaft is fixedly connected to a hydraulic motor, a coarse locating pin is installed inside the body, a first throttle valve is provided on one side of the coarse locating pin, an oil distribution block is installed on the body, and a second throttle valve, a brake tightening and releasing solenoid valve and an indexing solenoid valve are installed on the oil distribution block; The electrical control system includes a release and brake detection module, a work position detection module and a solenoid valve action control module, the release and brake detection module includes a release sensor and a brake sensor, and the work position detection module includes an encoder; The release and brake detection module is used to detect the release and brake status of the cutter disc; The workstation detection module is used to detect the rotation angle of the cutter head; The solenoid valve action control module is used to control the action of the solenoid valve.

[0005] Preferably, the fixed gear plate is fixedly mounted on the inner wall of the body, and the fixed gear plate and the movable gear plate are matched with the double gear plate, so that the double gear plate can be engaged with the fixed gear plate and the movable gear plate, thereby locking the movable gear plate.

[0006] Preferably, the hydraulic motor is fixedly mounted on the body, and the hydraulic motor is connected to an indexing solenoid valve, so that the indexing solenoid valve can be used to control the forward or reverse rotation of the hydraulic motor.

[0007] Preferably, the encoder is fixedly mounted on one side of the rear cover, and the encoder is connected to the main shaft, so that the rotation angle of the main shaft can be known by the encoder, thereby knowing the rotation angle of the cutter disc and the work position.

[0008] Preferably, the model of the hydraulic motor is set to BMR-100 or BMR-250.

[0009] Preferably, the voltage of the brake-releasing solenoid valve and the indexing solenoid valve is set to DC24V, the operating range is set to 21.6-26.4V, the power is set to 26W, and the holding current is set to 1.1A.

[0010] Preferably, the encoder is configured as a binary absolute value encoder, the power supply of the encoder is configured as DC 24V, and the load capacity is configured as 50mA.

[0011] Preferably, the brake sensor is configured as a locking proximity switch, the power supply of the brake sensor is configured as DC 24V, and the driving capability is configured as 300mA.

[0012] Preferably, the release sensor is configured as a release proximity switch, the power supply of the release sensor is configured as DC 24V, and the driving capability is configured as 300mA.

[0013] The present invention provides a horizontal hydraulic tool holder. Compared with the prior art, it has the following advantages: The horizontal hydraulic tool holder is driven by a hydraulic motor and has a simple structure, high rigidity, high reliability, and is suitable for connection to various CNC systems. It has a simple interface and can select the tool nearby. The large hydraulic locking force is suitable for heavy cutting, effectively improving the processing capacity and efficiency of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a side structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 This is another side cross-sectional structural schematic diagram of the present invention; Figure 5 is an operational flow chart of the present invention; Figure 6 It is the hydraulic principle diagram of the present invention; Figure 7This is the operating signal waveform diagram of the present invention.

[0015] In the figure: 1. Moving gear plate; 2. Fixed gear plate; 3. Double gear plate; 4. Main body; 5. Transmitter rod; 6. Main shaft; 7. Gear; 8. Camshaft; 9. Encoder; 10. Rear cover; 11. Brake sensor; 12. Release sensor; 13. Coarse positioning pin; 14. Hydraulic motor; 15. First throttle valve; 16. Oil distribution block; 17. Brake and release solenoid valve; 18. Indexing solenoid valve; 19. Second throttle valve. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] See also Figures 1 to 7 , an embodiment of the present invention provides a technical solution: a horizontal hydraulic tool holder, comprising a body 4 and an electrical control system; The rear end of the body 4 is equipped with a rear cover 10, and the main shaft 6 is rotatably connected inside the body 4. The front end of the main shaft 6 is fixedly installed with a movable gear disc 1. A fixed gear disc 2 is provided on one side of the movable gear disc 1. A double gear disc 3 is provided on one side of the movable gear disc 1 and the fixed gear disc 2. The movable stroke of the double gear disc 3 is about 6 mm, so that it can engage and separate with the fixed gear disc 2 and the movable gear disc 1. The fixed gear disc 2 is fixedly mounted on the inner wall of the body 4. The fixed gear disc 2 and the movable gear disc 1 are matched with the double gear disc 3, so that the double gear disc 3 can be used to engage with the fixed gear disc 2 and the movable gear disc 1, so that the movable gear disc 1 can be locked. A sending rod 5 is installed on one side of the double gear disc 3. The main shaft 6 is connected to the camshaft 8 through the gear 7. The end of the camshaft 8 is fixedly connected to the hydraulic motor 14. The model of the hydraulic motor 14 is set to BMR- 100 or BMR-250, two models of hydraulic motor 14 are adapted for different product models. A coarse locating pin 13 is installed inside the body 4, and a first throttle valve 15 is installed on one side of the coarse locating pin 13. The body 4 is mounted with an oil distribution block 16, and the oil distribution block 16 is mounted with a second throttle valve 19, a brake release solenoid valve 17 (YV1 in the figure), and an indexing solenoid valve 18 (YV2 in the figure). The hydraulic motor 14 is fixedly mounted on the body 4 and connected to the indexing solenoid valve 18 so that the indexing solenoid valve 18 can be used to control the forward or reverse rotation of the hydraulic motor 14. The voltage of the brake release solenoid valve 17 and the indexing solenoid valve 18 is set to DC24V, the operating range is set to 21.6-26.4V, the power is set to 26W, and the holding current is set to 1.1A; The electrical control system includes a release and brake detection module, a work position detection module and a solenoid valve action control module. The release and brake detection module includes a release sensor 12 and a brake sensor 11. The brake sensor 11 is set as a locking proximity switch. The power supply of the brake sensor 11 is set to DC 24V and the driving capacity is set to 300mA. The release sensor 12 is set as a release proximity switch. The power supply of the release sensor 12 is set to DC 24V and the driving capacity is set to 300mA. The work position detection module includes an encoder 9. The encoder 9 is fixedly mounted on one side of the rear cover 10 and the encoder 9 is connected to the main shaft 6, so that the rotation angle of the main shaft 6 can be obtained by using the encoder 9, thereby the rotation angle of the cutter head can be obtained, and the work position can be obtained. The encoder 9 is set as a binary absolute encoder. The power supply of the encoder 9 is set to DC 24V and the load capacity is set to 50mA. The release and brake detection module is used to detect the release and brake status of the cutter disc; The workstation detection module is used to detect the rotation angle of the cutter head; The solenoid valve action control module is used to control the action of the solenoid valve.

[0018] The following table is the truth table of encoder 9.

[0019]

[0020] The operating signal waveform diagram shows the sequence followed by the tool holder from position 2 to position 11 in the clockwise direction.

[0021] In addition, the present invention has a hydraulic oil interface with a size of Z3 / 8, and the requirements for the hydraulic oil include: (1) oil filtration accuracy ≤ 20μm; (2) oil viscosity 32-46mm2 / s; (3) oil temperature 35-55℃, which can reduce the adverse effects of oil contamination on hydraulic components such as hydraulic valves and motors.

[0022] When in use, the hydraulic motor 14 drives the camshaft 8 to rotate, and the rotation of the camshaft 8 drives the main shaft 6 to rotate through the gear 7, and the rotation of the main shaft 6 drives the cutter disc to rotate. The main control system sends an indexing command, passes the hydraulic oil, and the brake and release solenoid valve 17 is energized. The solenoid valve is switched to the left position, and the coarse positioning pin 13 is pulled out. At the same time, the hydraulic oil enters the tool holder release chamber, and the double gear disc 3 is disengaged. After disengaging in place, the release sensor 12 sends a signal. After a delay of 200ms, the indexing solenoid valve 18 is energized. According to the principle of selecting the tool nearby, the indexing solenoid valve 18 controls the hydraulic motor 14 to rotate forward or reverse. When the tool table rotates to the previous station of the required station, the encoder 9 sends a signal, the brake and release solenoid valve 17 loses power and switches to the right position, and the hydraulic oil enters the upper part of the coarse positioning pin 13. The pressure difference causes the coarse positioning pin 13 to fall slowly. At the same time, the first throttle valve 15 on the coarse positioning pin 13 throttles the oil circuit of the motor, reducing the rotation speed of the hydraulic motor 14. At the same time, the hydraulic oil enters the tool holder brake chamber, the double gear disc 3 engages with the movable gear disc 1 and the fixed gear disc 2, the tool holder is locked, and the brake sensor 11 sends a signal. After a delay of 100ms, the indexing solenoid valve 18 loses power and switches to the middle position. The indexing is completed, and the encoder 9 signal is confirmed to be consistent with the required work position. The host starts working. This product has a simple structure, high rigidity, and high reliability. It is suitable for connection to various CNC systems. It has a simple interface and can select the tool nearby. The hydraulic locking force is large and suitable for heavy cutting, which effectively improves the processing capacity and processing efficiency of the machine tool.

[0023] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0024] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0025] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A horizontal hydraulic tool holder, characterized by: It includes a body (4) and an electrical control system; The rear end of the body (4) is provided with a rear cover (10), the main shaft (6) is rotatably connected inside the body (4), the front end of the main shaft (6) is fixedly provided with a movable gear disc (1), one side of the movable gear disc (1) is provided with a fixed gear disc (2), one side of the movable gear disc (1) and the fixed gear disc (2) is provided with a double gear disc (3), one side of the double gear disc (3) is provided with a signaling rod (5), the main shaft (6) is connected to a camshaft (8) through a gear (7), the end of the camshaft (8) is fixedly connected to a hydraulic motor (14), a coarse positioning pin (13) is provided inside the body (4), one side of the coarse positioning pin (13) is provided with a first throttle valve (15), an oil distribution block (16) is provided on the body (4), and a second throttle valve (19), a brake release solenoid valve (17) and a shift solenoid valve (18) are provided on the oil distribution block (16); The electrical control system comprises a release and brake tightening detection module, a work position detection module and a solenoid valve action control module, the release and brake tightening detection module comprises a release sensor (12) and a brake tightening sensor (11), and the work position detection module comprises an encoder (9); The release and brake detection module is used to detect the release and brake status of the cutter disc; The workstation detection module is used to detect the rotation angle of the cutter head; The solenoid valve action control module is used to control the action of the solenoid valve.

2. The horizontal hydraulic tool rest according to claim 1, characterized in that: The fixed toothed disc (2) is fixedly mounted on the inner wall of the body (4), and both the fixed toothed disc (2) and the movable toothed disc (1) are matched with the double toothed disc (3).

3. The horizontal hydraulic tool rest according to claim 1, characterized in that: The hydraulic motor (14) is fixedly mounted on the body (4), and the hydraulic motor (14) is connected to the indexing solenoid valve (18).

4. The horizontal hydraulic tool rest according to claim 1, characterized in that: The encoder (9) is fixedly mounted on one side of the rear cover (10), and the encoder (9) is connected to the main shaft (6).

5. The horizontal hydraulic tool rest according to claim 1, characterized in that: The encoder (9) is configured as a binary absolute value encoder.

6. The horizontal hydraulic tool rest according to claim 1, characterized in that: The brake sensor (11) is configured as a locking proximity switch.

7. The horizontal hydraulic tool rest according to claim 1, characterized in that: The release sensor (12) is configured as a release proximity switch.

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