Balanced tool bit assembly and driving mechanism thereof
By sliding a pushrod and a counterweight in the hollow cavity of the motor spindle, the coaxiality and vibration problems during the machining of shaft-type workpieces are solved, achieving a high-precision and stable milling effect.
Patent Information
- Application Number
- CN202423177419.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-23
AI Technical Summary
In the prior art, the central axis of shaft-type workpieces is difficult to be coaxial with the rotational central axis of the processing equipment, resulting in low processing accuracy, requiring additional equipment to correct the central axis, and vibration and wear are prone to occur during processing.
A balanced cutter head assembly and its drive mechanism were designed. By sliding a pushrod in the hollow cavity of the motor spindle, combined with a counterweight and a diagonal bar structure, the rotation and axial movement of the cutter head are realized, avoiding vibration during machining and ensuring machining accuracy.
This achieves smooth milling with the cutter head, avoiding workpiece surface wear and vibration, and improving machining accuracy.
Smart Images
Figure CN223557936U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, and in particular to a balanced tool head assembly and its driving mechanism. Background Technology
[0002] Shaft-type parts processing equipment includes ordinary lathes and CNC lathes. They clamp the workpiece with a tripod chuck and rotate it, and then move it in the X and Y axis directions to perform cutting processing on the workpiece.
[0003] Shaft-type workpiece blanks are usually forged, meaning that a rough-machined workpiece is obtained through a first machining on a lathe, and a machined workpiece with a certain precision is obtained through a second or more machining processes. Due to the low precision of forging, it is difficult to make the central axis of the tripod chuck and the central axis of the workpiece coaxial, i.e., the coaxiality is low.
[0004] Therefore, another type of equipment is needed to correct the center axis. This involves clamping the workpiece with a fixture (i.e., keeping the workpiece stationary), rotating the cutting tool, and moving the cutting tool in the X and Y axes to perform cutting operations on the workpiece. At this time, the rotation center axis of the machining equipment and the center axis of the workpiece are coaxial, thus achieving the correction of the center axis.
[0005] Therefore, it is necessary to provide a cutter head assembly and its drive mechanism that can smoothly feed milling cutters. Utility Model Content
[0006] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a cutter head assembly and its driving mechanism that enables smooth milling cuts.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0008] This utility model discloses a balanced cutting head assembly and its driving mechanism, comprising a cutting head rotation drive component, a machining cutting head, a motor base, and a motor fixed to the motor base. The cutting head rotation drive component is provided with a countersunk hole and a first inclined groove, the countersunk hole and the first inclined groove being connected and communicating; a cutting head telescopic push component is slidably sleeved in the countersunk hole, and a cutting head redirecting inclined rod is slidably sleeved in the first inclined groove; one end of the cutting head redirecting inclined rod is connected to the machining cutting head; one end of the cutting head telescopic push component is provided with a first inclined shank and a second inclined shank, the first inclined shank and the second inclined shank... An angle is provided between the inclined shanks; one end of the first inclined shank is connected to the cutter head reversing inclined rod, so that when the cutter head telescopic propulsion component moves axially, the cutter head reversing inclined rod moves along its inclined direction; one end of the second inclined shank is connected to a counterweight, so that when the cutter head telescopic propulsion component moves axially, the counterweight moves with the second inclined shank; the main shaft of the motor has a hollow structure, and a push rod is slidably provided in the hollow cavity of the main shaft. When the push rod is pushed by an external force, the push rod makes a rotary motion or axial motion in the hollow cavity.
[0009] Furthermore, one end of the push rod is fixedly connected to the cutter head assembly; the other end of the push rod is connected to an axial sliding rotation assembly.
[0010] Furthermore, the axial sliding rotation assembly includes a sliding sleeve seat, which is fixedly mounted on the rear end face of the motor. The inner hole of the sliding sleeve seat is axially slidably fitted with a sliding sleeve. A linear bearing is embedded in the inner hole of one end of the sliding sleeve. The other end of the push rod extends into the inner hole of the sliding sleeve and is nested in the inner hole of the linear bearing.
[0011] Furthermore, a bearing cap for sealing the end face of the linear bearing is also fixedly connected to one end of the sliding sleeve.
[0012] Furthermore, the outer surface of the sliding sleeve is provided with a keyway along the axial direction, and the inner wall of the sliding sleeve seat is provided with a guide key that matches the keyway.
[0013] Furthermore, a slider is provided at the bottom of the motor base, which is connected to an external slide rail.
[0014] Furthermore, the cutter head rotation drive is also provided with a second inclined groove and a cavity, and the counterweight is slidably sleeved in the second inclined groove, so that when the cutter head telescopic pusher moves axially, the counterweight slides in the second inclined groove.
[0015] Furthermore, the included angle is 60-120 degrees.
[0016] Furthermore, the second included angle between the first inclined shank and the cutting head redirection inclined rod is a right angle.
[0017] Furthermore, the third angle between the second inclined handle and the counterweight is a right angle.
[0018] The beneficial effects of this utility model after adopting the above structure are as follows: The tool head assembly with balance and its driving mechanism of this utility model include a tool head rotation drive component, a machining tool head, a motor base, and a motor fixed on the motor base. The tool head rotation drive component is provided with a countersunk hole and a first inclined groove, and the countersunk hole and the first inclined groove are connected and communicate with each other. A tool head telescopic push component is slidably sleeved in the countersunk hole, and a tool head redirection inclined rod is slidably sleeved in the first inclined groove. One end of the tool head redirection inclined rod is connected to the machining tool head. One end of the tool head telescopic push component is provided with a first inclined shank and a second inclined shank. An included angle is provided between the first and second inclined handles; one end of the first inclined handle is connected to the cutter head redirection inclined rod, so that when the cutter head telescopic propulsion component moves axially, the cutter head redirection inclined rod moves along its inclined direction; one end of the second inclined handle is connected to a counterweight block, so that when the cutter head telescopic propulsion component moves axially, the counterweight block moves with the second inclined handle; the main shaft of the motor has a hollow structure, and a push rod is slidably provided in the hollow cavity of the main shaft. When the push rod is pushed by an external force, the push rod makes a rotary motion or axial motion in the hollow cavity. When using this utility model, a push rod is slidably installed in the hollow cavity of the spindle. The push rod, which can rotate or move axially, serves as a transmission component, enabling the tool to rotate and move axially. The counterweight moves with the machining head, thus preventing slight vibrations when the machining head rotates at high speed to process the workpiece. This avoids wear and scratches on the workpiece surface during processing, ensuring the machining accuracy of the workpiece. Smooth milling with feed ensures machining accuracy. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the cutter head assembly;
[0021] Explanation of reference numerals in the attached figures:
[0022] 100. Cutter head assembly;
[0023] 1. Cutter head rotation drive component; 11. Countersunk hole; 12. First inclined groove; 13. Second inclined groove;
[0024] 14. Cavity;
[0025] 2. Cutter head telescopic thrust component; 21. First slanted shank; 22. Second slanted shank;
[0026] 3. Cutter head redirection bar;
[0027] 4. Machining the cutting head; 5. Counterweight; α, included angle;
[0028] 201. Motor mount; 202. Motor; 202-1. Spindle; 203. Tappet;
[0029] 204. Linear bearing; 205. Sliding sleeve seat; 206. Sliding sleeve; 206-1. Keyway;
[0030] 207. Bearing cap; 208. Guide key; 209. Connecting plate; 2010. Locking nut. Detailed Implementation
[0031] The present invention will be further described below with reference to the accompanying drawings.
[0032] like Figure 1 As shown, the present invention discloses a balanced cutter head assembly and its driving mechanism. The balanced cutter head assembly and its driving mechanism include a motor base 201 and a motor 202 fixed on the motor base 201. The main shaft 202-1 of the motor 202 has a hollow structure. A push rod 203 is slidably provided in the hollow cavity of the main shaft 202-1. When the push rod 203 is pushed by an external force, the push rod 203 makes a rotary motion or axial motion in the hollow cavity.
[0033] In a preferred embodiment of this invention, one end of the push rod 203 is fixedly connected to the cutter head assembly 100; specifically, one end of the cutter head telescopic push member 2 of the cutter head assembly 100 extends into the hollow cavity and is fixedly connected to one end of the push rod 203; this connection method adopts a threaded connection. To ensure the firmness of the connection, one end of the push rod 203 is also threadedly connected to a locking nut 2010, and one end of the locking nut 2010 is tightly pressed against the end face of the cutter head telescopic push member 2.
[0034] The other end of the push rod 203 is connected to an axial sliding rotation assembly.
[0035] In a preferred embodiment of the present invention, the axial sliding rotation assembly includes a sliding sleeve seat 205, which is fixedly disposed on the rear end face of the motor 202. A sliding sleeve 206 is axially slidably sleeved in the inner hole of the sliding sleeve seat 205. A linear bearing 204 is embedded in the inner hole of one end of the sliding sleeve 206. The other end of the push rod 203 extends into the inner hole of the sliding sleeve 206 and is nested in the inner hole of the linear bearing 204.
[0036] In a preferred embodiment of this utility model, one end of the sliding sleeve 206 is also fixedly connected to a bearing cap 207 for sealing the end face of the linear bearing 204.
[0037] In a preferred embodiment of the present invention, the outer surface of the sliding sleeve 206 is provided with a keyway 206-1 along the axial direction, and the inner wall of the sliding sleeve seat 205 is provided with a guide key 208 that matches the keyway 206-1.
[0038] like Figure 2 As shown, the cutter head assembly 100 includes a cutter head rotation drive 1 and a machining cutter head 4. The cutter head rotation drive 1 is provided with a countersunk hole 11 and a first inclined groove 12, which are connected and communicate with each other. One end of the cutter head rotation drive 1 is connected to the motor spindle. A cutter head telescopic propulsion member 2 is slidably sleeved on the countersunk hole 11, and a cutter head redirecting inclined rod 3 is slidably sleeved on the first inclined groove 12. One end of the cutter head redirecting inclined rod 3 is connected to the machining cutter head 4. One end of the cutter head telescopic propulsion member 2 is provided with a first inclined shank 21 and a second inclined shank 22, and the other end of the cutter head telescopic propulsion member 2 is connected to a drive member capable of telescopic propulsion. An included angle α is provided between the first inclined shank 21 and the second inclined shank 22. One end of the first inclined shank 21 is connected to the cutter head redirecting inclined rod 3 so that when the cutter head telescopic propulsion member 2 moves axially, the cutter head redirecting inclined rod 3 moves along its inclined direction. One end of the second inclined shank 22 is connected to a counterweight 5, so that when the tool tip telescopic propulsion member 2 moves axially, the counterweight 5 moves with the second inclined shank 22. The tool tip rotation drive member 1 is also provided with a second inclined groove 13 and a cavity 14. The counterweight 5 is slidably sleeved in the second inclined groove 13, so that when the tool tip telescopic propulsion member 2 moves axially, the counterweight 5 slides in the second inclined groove 13, which can better balance the machining tool tip 4 and avoid vibration of the machining tool tip 4 during machining. The second inclined groove 13 is connected to the cavity 14 and the countersunk hole 11 respectively; the first inclined groove 12 is connected to the cavity 14; the countersunk hole 11, the first inclined groove 12, the second inclined groove 13 and the cavity 14 together surround a large cavity, so that the tool tip telescopic propulsion member 2 can move back and forth in the large cavity. The included angle α is 60-120 degrees, and the included angle α of this utility model is preferably 110 degrees; this can further prevent the machining head 4 from vibrating during machining. The second included angle between the first inclined shank 21 and the cutting head redirection inclined rod 3 is a right angle; this can more effectively drive the cutting head redirection inclined rod 3 to move, effectively reduce the pushing force of the cutting head telescopic propulsion component 2, and also prevent the machining head 4 from vibrating during machining. The third included angle between the second inclined shank 22 and the balance weight 5 is a right angle; this can more effectively drive the cutting head redirection inclined rod 3 to move, effectively reduce the pushing force of the cutting head telescopic propulsion component 2, and also prevent the machining head 4 from vibrating during machining.
[0039] When an external force pushes the sliding sleeve 206, the sliding sleeve 206 moves axially along the direction of the guide key 208. At this time, the sliding sleeve 206 drives the push rod 203 and the cutter head telescopic push member 2 to move axially in sequence.
[0040] The spindle 202-1 is fixedly connected to the cutter head rotation drive 1 of the cutter head assembly 100 via the connecting plate 209. When the spindle 202-1 of the motor 202 rotates, the spindle 202-1 carries the cutter head assembly 100 and the push rod 203 together in a rotary motion.
[0041] The motor base 201 of this utility model is provided with a slider at the bottom end, which is connected to an external slide rail. The motor 202 can move along the direction of the external slide rail under the drive of external force.
[0042] As a preferred embodiment of this utility model, the external force driving the sliding sleeve 206 can be driven by a hydraulic servo cylinder. Specifically, the hydraulic servo cylinder is fixed on one side of the sliding sleeve seat 205, and the telescopic rod of the hydraulic servo cylinder extends into the sliding sleeve seat 205 and is fixedly connected to the sliding sleeve 206, thereby realizing the driving force of the hydraulic servo cylinder on the axial movement of the sliding sleeve 206.
[0043] As a preferred embodiment of this utility model, the external force driving the sliding sleeve 206 can be driven by a servo motor. Specifically, the servo motor is fixed on one side of the sliding sleeve seat 205, the shaft of the servo motor is connected to the lead screw, and a ball sleeve that cooperates with the lead screw is connected inside the sliding sleeve 206. When the servo motor drives the lead screw to rotate, the ball sleeve drives the sliding sleeve 206 to move along the axial direction of the lead screw.
[0044] As a preferred embodiment of this utility model, the external force driving the sliding sleeve 206 can be driven by a hydraulic motor. Specifically, the hydraulic motor is fixed on one side of the sliding sleeve seat 205, the rotating shaft of the hydraulic motor is connected to the lead screw, and a ball sleeve that cooperates with the lead screw is connected inside the sliding sleeve 206. When the hydraulic motor drives the lead screw to rotate, the ball sleeve drives the sliding sleeve 206 to move along the axial direction of the lead screw.
[0045] The external force driving the sliding sleeve 206 can also be other power sources that can realize the action of this utility model.
[0046] In using this utility model, a tappet is slidably installed in the hollow cavity of the spindle. This tappet, capable of rotary or axial movement, serves as a transmission component, enabling the tool to rotate and move axially. This utility model ensures the smoothness and precision of the tappet's axial movement, thereby guaranteeing machining accuracy.
[0047] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. A balanced cutting head assembly and its driving mechanism, characterized in that: The device includes a cutting head rotation drive (1), a machining head (4), a motor base (201), and a motor (202) fixed on the motor base (201). The cutting head rotation drive (1) is provided with a countersunk hole (11) and a first inclined groove (12). The countersunk hole (11) and the first inclined groove (12) are connected and communicate with each other. A cutting head telescopic pusher (2) is slidably sleeved in the countersunk hole (11), and a cutting head redirection rod (3) is slidably sleeved in the first inclined groove (12). One end of the cutting head redirection rod (3) is connected to the machining head (4). The blade telescopic pusher (2) is provided with a first inclined shank (21) and a second inclined shank (22) at one end, and an included angle (α) is provided between the first inclined shank (21) and the second inclined shank (22); One end of the first slant handle (21) is connected to the cutter head reversing slant bar (3) so that when the cutter head telescopic push member (2) moves axially, the cutter head reversing slant bar (3) moves along its tilt direction; One end of the second inclined handle (22) is connected to a counterweight (5) so that when the cutter head telescopic pusher (2) moves axially, the counterweight (5) moves with the second inclined handle (22); The main shaft (202-1) of the motor (202) has a hollow structure. A push rod (203) is slidably provided in the hollow cavity of the main shaft (202-1). When the push rod (203) is pushed by an external force, the push rod (203) makes a rotary motion or axial motion in the hollow cavity.
2. The balanced cutter head assembly and its driving mechanism according to claim 1, characterized in that: One end of the push rod (203) is fixedly connected to the cutter head assembly (100); the other end of the push rod (203) is connected to an axial sliding rotation assembly.
3. The balanced cutter head assembly and its driving mechanism according to claim 1, characterized in that: The axial sliding rotation assembly includes a sliding sleeve (205). The sliding sleeve seat (205) is fixedly installed on the rear end face of the motor (202). The inner hole of the sliding sleeve seat (205) is axially slidably fitted with a sliding sleeve (206). A linear bearing (204) is embedded in the inner hole of one end of the sliding sleeve (206). The other end of the push rod (203) extends into the inner hole of the sliding sleeve (206) and is nested in the inner hole of the linear bearing (204).
4. A balanced cutter head assembly and its driving mechanism according to claim 3, characterized in that: One end of the sliding sleeve (206) is also fixedly connected to a bearing cap (207) for sealing the end face of the linear bearing (204).
5. A balanced cutter head assembly and its driving mechanism according to claim 3, characterized in that: The outer surface of the sliding sleeve (206) is provided with a keyway (206-1) along the axial direction, and the inner wall of the sliding sleeve seat (205) is provided with a guide key (208) that matches the keyway (206-1).
6. A balanced cutter head assembly and its driving mechanism according to claim 1, characterized in that: The motor base (201) is provided with a slider at the bottom, which is connected to the external slide rail.
7. A balanced cutter head assembly and its driving mechanism according to claim 1, characterized in that: The cutting head rotation drive (1) is also provided with a second inclined groove (13) and a cavity (14). The counterweight (5) is slidably sleeved in the second inclined groove (13), so that when the cutting head telescopic pusher (2) moves axially, the counterweight (5) slides in the second inclined groove (13).
8. A balanced cutter head assembly and its driving mechanism according to claim 1, characterized in that: The included angle (α) is 60-120 degrees.
9. A balanced cutter head assembly and its driving mechanism according to claim 1, characterized in that: The second included angle between the first inclined shank (21) and the cutting head reversing inclined rod (3) is a right angle.
10. A balanced cutter head assembly and its driving mechanism according to claim 1, characterized in that: The third angle between the second inclined handle (22) and the counterweight (5) is a right angle.