Extending knife power head
By designing the feed guide mechanism and the tap guide mechanism in the tap power head, the swing problem of the tap assembly during the feeding of the spindle is solved, the machining accuracy and structural compactness are improved, and the installation and maintenance process is simplified.
Patent Information
- Application Number
- CN202422743167.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-11-12
AI Technical Summary
When the existing tool spreader power head is operating, the tool spreader assembly lacks a guide mechanism that moves in the axial direction, resulting in a swing phenomenon, affecting the accuracy and stability of processing. At the same time, the slide rail layout takes up space and is difficult to install and maintain. .
The feed guide mechanism is designed, including a knife support plate, a first guide rail and a first slider. The smooth axial sliding of the knife assembly is achieved through a screw pair, a knife servo motor and a connecting cylinder, and the knife radiates through a knife guide mechanism. Use nut seats and guide rails to achieve radial control, simplify the structure and reduce space consumption.
It effectively avoids the swing of the tool spreader assembly, improves the rigidity, accuracy and reliability of the tool spreader power head, simplifies the structure, reduces the difficulty of installation and maintenance, and achieves a more compact design.
Smart Images
Figure CN222176850U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of machining equipment, in particular to a spreading cutter power head. Background Art
[0002] The spreading tool head is a commonly used CNC machining tool. Its main feature is that while the tool head is rotating, it can also control the radial movement of the sliding tool holder on the spreading tool head through the spreading tool mechanism to achieve the spreading tool action, which is convenient for processing various regular and irregular workpieces.
[0003] The Chinese patent with the announcement number CN219542451U discloses a knife spreading power head, which includes a power head assembly and a knife spreading assembly. The power head assembly is provided with a spindle rotation mechanism for driving the spindle to rotate and a spindle feeding mechanism for driving the spindle to feed in the axial direction. The knife spreading assembly includes a knife spreading head, a drive motor and a knife spreading head transmission mechanism. The patent provides a knife spreading rod and a sleeve of the knife spreading head transmission mechanism with mutually matched slide rails and sliders, thereby ensuring the stable transmission of the knife spreading rod and the sleeve, which is conducive to accurately controlling the radial feeding of the sliding knife seat.
[0004] However, the patent still has the following problems: First, when the spindle feeding mechanism is in operation, the knife spreading assembly needs to move axially with the spindle. However, the patent does not set a guide mechanism for the axial movement of the knife spreading assembly as a whole. Therefore, the knife spreading assembly may swing during the process, making it difficult for the spindle to achieve smooth and accurate axial feeding, thereby adversely affecting the processing action; second, the patent arranges the slide rails on both sides of the shell, and an opening is also required on the cover, and the slider is connected to the sleeve and the slide rail respectively through the opening. It can be seen that this guide mechanism not only occupies a large space, but also has a relatively complex structure, which is not conducive to installation and maintenance. Utility Model Content
[0005] The utility model provides a knife spreading power head, the main purpose of which is to solve the problems existing in the prior art.
[0006] The utility model adopts the following technical solutions:
[0007] A knife spreading power head includes a power head assembly and a knife spreading assembly, the power head assembly includes a spindle, a spindle box and a spindle feed mechanism for driving the spindle to slide axially, the knife spreading assembly includes a knife spreading rod installed in the spindle and a knife spreading drive mechanism for driving the knife spreading rod to slide axially; it also includes a feed guide mechanism, the feed guide mechanism includes a knife spreading support plate, a first guide rail and a first slider, the knife spreading support plates are fixedly provided on both sides of the spindle box, and the knife spreading drive mechanism is slidably connected to the knife spreading support plate through the first guide rail and the first slider that cooperate with each other.
[0008] Furthermore, the knife spreading drive mechanism includes a screw pair, a knife spreading servo motor and a connecting tube; the connecting tube is slidably connected to the knife spreading support plate through the first guide rail and the first slider, and the knife spreading servo motor is fixedly provided at the end of the connecting tube; the screw pair is installed in the connecting tube and is transmission-connected to the knife spreading rod and the knife spreading servo motor.
[0009] Furthermore, the connecting tube includes a bearing seat, a sleeve and a fixed seat connected in sequence, the main shaft is rotatably mounted in the bearing seat, the screw rod pair is mounted in the sleeve, and the knife spreading servo motor is fixed to the end of the fixed seat.
[0010] Furthermore, the first sliding block is arranged on both sides of the outside of the bearing seat and the sleeve, and the first guide rail is arranged on the inner side of the knife support plate.
[0011] Furthermore, the knife spreading assembly also includes a knife spreading guide mechanism; the screw rod pair includes a screw rod and a nut seat that cooperate with each other, the nut seat is slidably connected to the connecting tube through the knife spreading guide mechanism, one end of the nut seat is provided with a mounting portion for installing the knife spreading rod, and the other end of the nut seat is provided with a nut that cooperates with the screw rod.
[0012] Furthermore, the knife spreading guide mechanism includes a second guide rail and a second slide block that cooperate with each other, the second slide block is provided at the bottom of the nut seat, and the second guide rail is provided in the connecting tube.
[0013] Furthermore, a hollow portion is provided at the bottom of the connecting tube, and the second guide rail is embedded in the hollow portion through a mounting plate.
[0014] Furthermore, a first inspection port is provided on the top of the nut seat, a second inspection port is provided on the top of the connecting tube, and an inspection cover is provided.
[0015] Furthermore, extension blocks are provided on both sides of the rear end of the spindle box, and the knife support plate is fixedly arranged on the extension blocks.
[0016] Compared with the prior art, the beneficial effects of the present invention are:
[0017] 1. The utility model designs a special feed guide mechanism for the knife spreading assembly of the knife spreading power head. When the spindle feed mechanism is in motion, the knife spreading assembly can stably and smoothly achieve axial displacement under the support and guidance of the feed guide mechanism, avoiding the swing of the knife spreading assembly, thereby effectively improving the rigidity, accuracy and reliability of the knife spreading power head.
[0018] 2. The knife spreading guide mechanism of the utility model can enable the knife spreading drive mechanism to drive the knife spreading rod more accurately and smoothly, thereby facilitating accurate control of the radial feed of the sliding knife seat. Compared with the prior art, the knife spreading guide mechanism of this embodiment only needs to occupy the internal space of the nut seat and the sleeve, and the structure is more reasonable and compact, and is more conducive to installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of the utility model.
[0020] Figure 2 It is a cross-sectional schematic diagram of the utility model.
[0021] Figure 3 It is a structural schematic diagram of the unfolding knife assembly in the utility model.
[0022] Figure 4 It is an exploded schematic diagram of the unfolding knife assembly in the utility model.
[0023] Figure 5 It is a structural schematic diagram of the spindle box and the knife support plate in the utility model.
[0024] In the figure: 100-spindle; 110-spindle box; 111-extension block; 120-spindle feeding mechanism; 121-feed servo motor; 122-feed screw rod; 123-connecting seat; 130-spindle rotating mechanism; 131-motor box; 132-spindle motor; 200-knife spreading drive mechanism; 201-knife spreading servo motor; 202-bearing seat; 203-sleeve; 204-fixed seat; 2 05-screw; 206-nut seat; 207-bearing; 208-nut; 209-first inspection port; 210-second inspection port; 211-inspection cover; 212-hollow portion; 213-mounting plate; 220-feed guide mechanism; 221-knife support plate; 222-first guide rail; 223-first slider; 230-knife guide mechanism; 231-second guide rail; 232-second slider. DETAILED DESCRIPTION
[0025] The specific implementation of the present invention is described below with reference to the accompanying drawings. In order to fully understand the present invention, many details are described below, but for those skilled in the art, the present invention can be implemented without these details.
[0026] like Figure 1 and Figure 2As shown, a knife spreading power head includes a power head assembly and a knife spreading assembly, the power head assembly includes a spindle 100, a spindle box 110 and a spindle feeding mechanism 120 for driving the spindle 100 to slide axially, and the knife spreading assembly includes a knife spreading rod (not shown in the figure) installed in the spindle 100 and a knife spreading driving mechanism 200 for driving the knife spreading rod to slide axially. Specifically, the axial feeding action of the knife spreading power head refers to the spindle feeding mechanism 120 driving the spindle 100 and the entire knife spreading assembly to slide axially, so that the knife spreading power head has an axial feed amount, thereby enriching the processing function, so during the axial feeding action, the entire knife spreading assembly needs to follow the spindle 100 to undergo axial displacement. The knife spreading action of the knife spreading power head refers to the knife spreading drive mechanism 200 driving the knife spreading rod to slide axially in the main shaft 100, thereby driving the sliding knife seat (not shown in the figure) at the front end of the main shaft 100 to achieve radial feeding. Therefore, when the knife is spreading, only the knife spreading rod slides axially, and the knife spreading drive mechanism 200 as a whole will not undergo axial displacement.
[0027] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, in order to ensure that the whole spreading knife assembly can move smoothly in the axial direction with the spindle 100 when the spreading knife power head is in axial feeding action, the utility model designs a feeding guide mechanism 220 for the spreading knife assembly, and the feeding guide mechanism 220 includes a spreading knife support plate 221, a first guide rail 222 and a first slider 223. Spreading knife support plates 221 are fixedly arranged on both sides of the spindle box 110, and the spreading knife driving mechanism 200 is slidably connected to the spreading knife support plate 221 through the first guide rail 222 and the first slider 223 that cooperate with each other. When the spindle feeding mechanism 120 is in action, the spreading knife assembly can achieve axial displacement steadily and smoothly under the support and guidance of the feeding guide mechanism 220, avoiding the phenomenon of swinging of the spreading knife assembly, thereby effectively improving the rigidity, accuracy and reliability of the spreading knife power head.
[0028] like Figures 1 to 5 As shown, the knife spreading drive mechanism 200 includes a screw pair, a knife spreading servo motor 201 and a connecting tube; the connecting tube is slidably connected to the knife spreading support plate 221 through the first guide rail 222 and the first slider 223, and the knife spreading servo motor 201 is fixed at the end of the connecting tube; the screw pair is installed in the connecting tube, and is transmission-connected to the knife spreading rod and the knife spreading servo motor 201. When the knife is spreading, the knife spreading servo motor 201 drives the knife spreading rod to slide axially through the screw pair, and the connecting tube plays a protective role of dust and water; when the axial feeding action is performed, the connecting tube cooperates with the feeding guide mechanism 220 to play the role of transitionally connecting the spindle box 110 and the knife spreading drive mechanism 200, so that the knife spreading drive mechanism 200 can be slidably connected to the spindle box 110 as a whole.
[0029] like Figures 1 to 5As shown, the connection tube in this embodiment includes a bearing seat 202, a sleeve 203 and a fixed seat 204 connected in sequence, the main shaft 100 is rotatably mounted in the bearing seat 202, the screw pair is mounted in the sleeve 203, and the knife spreading servo motor 201 is fixed at the end of the fixed seat 204. Specifically, the output shaft of the knife spreading servo motor 201 extends into the fixed seat 204 and is connected to the screw pair through a coupling (not shown in the figure); the first slider 223 is arranged on both sides of the outside of the bearing seat 202 and the sleeve 203, and the first guide rail 222 is arranged on the inner side of the two knife spreading support plates 221. In this embodiment, the connection tube is designed as a bearing seat 202, a sleeve 203 and a fixed seat 204 that cooperate with each other, thereby making the assembly relationship between the main shaft 100, the spindle box 110 and the knife spreading drive mechanism 200 more reasonable and compact, and firm and reliable.
[0030] like Figures 2 to 4 As shown, the knife spreading assembly also includes a knife spreading guide mechanism 230; the screw rod pair includes a screw rod 205 and a nut seat 206 that cooperate with each other, and the nut seat 206 is slidably connected in the connecting tube through the knife spreading guide mechanism 230. One end of the nut seat 206 is provided with a mounting portion for mounting the knife spreading rod, and the other end of the nut seat 206 is provided with a nut 208 that cooperates with the screw rod 205. Specifically, a first mounting hole is provided at the front end of the nut seat 206, and a plurality of bearings 207 are provided in the first mounting hole. The first mounting hole and the bearings 207 constitute a mounting portion for mounting the knife spreading rod. A second mounting hole is provided at the rear end of the nut seat 206, and a nut 208 that cooperates with the screw rod 205 is fixed in the second mounting hole. In this embodiment, the nut seat 206 has a simple structure, is firm and reliable, and is conducive to smoothly and accurately transmitting the sliding action of the nut 208 to the knife spreading rod. Through the knife spreading guide mechanism 230, the nut seat 206 can drive the knife spreading rod more accurately and smoothly, thereby facilitating accurate control of the radial feed of the sliding knife seat.
[0031] like Figures 2 to 4 As shown, the knife spreading guide mechanism 230 includes a second guide rail 231 and a second slider 232 that cooperate with each other. The second slider 232 is provided at the bottom of the nut seat 206, and the second guide rail 231 is provided in the sleeve 203. In this embodiment, a hollow portion 212 is provided at the bottom of the sleeve 203, and the second guide rail 231 is embedded in the hollow portion 212 through a mounting plate 213, so that the nut seat 206 can slide smoothly along the axial direction in the sleeve 203. Compared with the prior art, the knife spreading guide mechanism 230 of this embodiment only needs to occupy the internal space of the nut seat 206 and the sleeve 203, and the structure is more reasonable and compact, and is more conducive to installation and maintenance.
[0032] like Figure 3 and Figure 4As shown, in order to facilitate daily maintenance and inspection of the screw pair, a first inspection port 209 is provided on the top of the nut seat 206, a second inspection port 210 is provided on the top of the bearing seat 202 and the connecting tube, and an inspection cover 211 is provided.
[0033] like Figure 1 and Figure 5 As shown, extension blocks 111 are provided on both sides of the rear end of the spindle box 110, and the knife support plate 221 is fixed to the extension blocks 111, thereby improving the structural strength of the spindle box 110 and ensuring that the connection point between the knife support plate 221 and the spindle box 110 is more firm and reliable.
[0034] like Figure 1 and Figure 2 As shown, the power head assembly also includes a spindle rotation mechanism 130 for driving the spindle 100 to rotate. The spindle rotation mechanism 130 includes a motor box 131 and a spindle motor 132. A transmission assembly is provided in the motor box 131. The spindle 100 is connected to the spindle motor 132 through the transmission assembly. When working, the rotation of the spindle 100 is driven by the spindle motor 132. Since the extension blocks 111 are provided on both sides of the rear end of the spindle box 110, the motor box 131 is installed above the extension blocks 111 in this embodiment so as not to block each other with the blade support plate 221.
[0035] like Figure 1 and Figure 2 As shown, the spindle feeding mechanism 120 includes a feeding servo motor 121, a feeding screw 122, a connecting seat 123 and other components. The feeding servo motor 121 drives the connecting seat 123 to slide axially through the feeding screw 122, and then drives the spindle 100 and the knife spreading assembly to slide axially through the connecting seat 123. The working principle of the spindle feeding mechanism 120 belongs to the prior art and will not be described in detail here.
[0036] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.
Claims
1. A spreading knife power head, comprising a power head assembly and a spreading knife assembly, wherein the power head assembly comprises a spindle, a spindle box and a spindle feeding mechanism for driving the spindle to slide axially, and the spreading knife assembly comprises a spreading knife rod installed in the spindle and a spreading knife driving mechanism for driving the spreading knife rod to slide axially, characterized in that: It also includes a feed guide mechanism, which includes a knife support plate, a first guide rail and a first slider. The knife support plates are fixedly arranged on both sides of the spindle box. The knife drive mechanism is slidably connected to the knife support plate through the first guide rail and the first slider that cooperate with each other.
2. A spreading knife power head according to claim 1, characterized in that: The knife spreading drive mechanism includes a screw pair, a knife spreading servo motor and a connecting tube; the connecting tube is slidably connected to the knife spreading support plate through the first guide rail and the first slider, and the knife spreading servo motor is fixedly provided at the end of the connecting tube; the screw pair is installed in the connecting tube and is transmission-connected to the knife spreading rod and the knife spreading servo motor.
3. A spreading knife power head according to claim 2, characterized in that: The connecting tube includes a bearing seat, a sleeve and a fixed seat which are connected in sequence. The main shaft is rotatably mounted in the bearing seat, the screw rod pair is mounted in the sleeve, and the knife spreading servo motor is fixed to the end of the fixed seat.
4. A spreading knife power head according to claim 3, characterized in that: The first sliding block is arranged on both sides of the outside of the bearing seat and the sleeve, and the first guide rail is arranged on the inner side of the knife support plate.
5. A spreading knife power head as claimed in claim 2, characterized in that: The knife spreading assembly also includes a knife spreading guide mechanism; the screw rod pair includes a screw rod and a nut seat that cooperate with each other, the nut seat is slidably connected to the connecting tube through the knife spreading guide mechanism, one end of the nut seat is provided with a mounting portion for installing the knife spreading rod, and the other end of the nut seat is provided with a nut that cooperates with the screw rod.
6. A spreading knife power head according to claim 5, characterized in that: The knife spreading guide mechanism comprises a second guide rail and a second slide block which cooperate with each other. The bottom of the nut seat is provided with the second slide block, and the connecting tube is provided with the second guide rail.
7. A spreading knife power head according to claim 6, characterized in that: The bottom of the connecting tube is provided with a hollow portion, and the second guide rail is embedded in the hollow portion through a mounting plate.
8. The spreading knife power head according to claim 5, characterized in that: The top of the nut seat is provided with a first inspection port, the top of the connecting tube is provided with a second inspection port, and is equipped with an inspection cover.
9. The spreading knife power head according to claim 1, characterized in that: Extension blocks are arranged on both sides of the rear end of the spindle box, and the knife spreading support plate is fixedly arranged on the extension blocks.