Inner hole groove boring machine tool
By designing a boring inner hole groove machine tool, using the coordinated work of components such as frames, slide rails, and plate boxes, the problem of high processing costs of inner hole grooves of long shaft parts in the existing technology is solved, and low-cost and efficient processing results are achieved.
Patent Information
- Application Number
- CN202421744381.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-22
AI Technical Summary
In the prior art, processing the inner hole grooves of long shaft parts requires the use of equipment with large working strokes, resulting in high production costs and affecting the competitiveness and profitability of the enterprise.
Design a boring inner hole groove machine tool, including frame, slide rail, plate box, tool rod assembly, drive assembly, fixture assembly and control cabinet. Through the coordinated work of these components, precise processing of the inner hole groove of the workpiece is achieved.
The machine tool has a simple structure and low manufacturing cost. It can effectively reduce production costs, improve product competitiveness, and meet the needs of long shaft parts for processing multiple inner hole slots.
Smart Images
Figure CN222843595U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of lathes, and in particular relates to a machine tool for boring inner holes and grooves. Background Art
[0002] like Fig.15 A long shaft part is shown, and its inner hole is covered with multiple inner hole grooves. The prior art generally uses a machining center or a CNC lathe for processing. However, since it is a long shaft part, the machining center or CNC lathe needs to have a large working stroke, and such a large working stroke equipment itself is expensive and has high labor costs. If such a large working stroke equipment is used to produce long shaft parts, the production cost of long shaft parts will increase dramatically, affecting the competitiveness and profitability of the enterprise.
[0003] Therefore, there is an urgent need for a low-cost equipment to process long shaft parts. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a machine tool for boring inner grooves, which is used to solve the technical problems in the prior art of machining multiple inner grooves of long shaft parts by machining centers or CNC garages, which have high production costs and affect the competitiveness and profitability of enterprises.
[0005] The utility model solves the above technical problems with the following technical solutions: a machine tool for boring inner holes, comprising:
[0006] frame;
[0007] A slide rail, the slide rail is arranged on one side of the top surface of the frame, and the slide rail is a dovetail guide rail or a V-shaped guide rail;
[0008] A slide box, the slide box is arranged on the slide rail, a knife bar assembly is arranged at the front end of the slide box, and a first drive assembly is arranged at the rear end of the slide box, the first drive assembly is used to drive the knife bar assembly to move forward and backward;
[0009] The slide rail is also provided with a second driving assembly, and the second driving assembly is used to drive the slide box to move forward and backward;
[0010] A fixture assembly, the fixture assembly is arranged on the other side of the top surface of the frame, and the fixture assembly includes a chuck and a chuck drive assembly, the chuck is coaxial with the tool bar assembly, and the chuck is used to clamp a workpiece;
[0011] A control cabinet is arranged on one side of the frame, and the control cabinet is electrically connected to the first drive assembly, the second drive assembly and the chuck drive assembly.
[0012] The utility model fixes the workpiece to be processed by a clamp assembly, and then allows the slide box to drive the tool rod assembly to move forward and backward to realize the processing of the inner hole groove of the workpiece; in particular, the control cabinet controls the first drive assembly to drive the tool rod assembly to move forward and backward to bore the inner hole groove, so as to achieve the processing accuracy of the width and depth of the inner hole groove, and the second drive assembly is controlled to drive the slide box as a whole (including the tool rod assembly, but when the slide box moves, the tool rod assembly does not bore holes) to move forward and backward to realize the distance adjustment between multiple inner hole grooves, and the processing speed of the workpiece is adjusted by controlling the chuck drive assembly to adapt to different materials; the machine tool has a simple structure and low manufacturing cost, can effectively reduce production costs, and has few control variables and a stable processing state, which can meet the needs of processing multiple inner hole grooves of long shaft parts.
[0013] Further: the slide box is provided with a first chamber, a second chamber and a third chamber in sequence, and the first driving assembly includes:
[0014] a first drive motor, the first drive motor being arranged on the rear end outer wall of the slide box, and the output shaft of the first drive motor extending into the first chamber;
[0015] A speed-changing external gear pair, wherein the speed-changing external gear pair is disposed in the first chamber, and a small gear in the speed-changing external gear pair is connected to an output shaft of the first drive motor, and a large gear in the speed-changing external gear pair is connected to one end of a first transmission shaft, and the other end of the first transmission shaft extends into the second chamber, wherein a transmission external thread is disposed at the other end of the first transmission shaft;
[0016] A transmission block, the transmission block is arranged in the second chamber, a transmission internal thread is opened on the side of the transmission block, the transmission block is sleeved on the other end of the first transmission shaft, and the transmission internal thread is adapted to the transmission external thread;
[0017] A second transmission shaft, wherein the second transmission shaft is arranged in the third chamber, and the left end of the second transmission shaft passes through the partition between the second chamber and the third chamber and is connected to the transmission block, and the right end of the second transmission shaft slides in the side wall of the third chamber, and the right end of the second transmission shaft is connected to the knife rod assembly.
[0018] The beneficial effects of adopting this step are as follows: the first drive motor achieves a deceleration effect through a variable speed external meshing gear pair, and transmits the power to the first transmission shaft after deceleration. Then the first transmission shaft converts the rotational motion into linear motion through the transmission thread, allowing the transmission block to achieve forward and backward displacement, and then the transmission block can drive the second transmission shaft to achieve forward and backward displacement, and the second transmission shaft finally drives the tool rod assembly to achieve forward and backward displacement, thereby achieving the purpose of boring the inner hole groove.
[0019] Further: the second driving component includes:
[0020] a second drive motor, the second drive motor being arranged at one end of the slide rail;
[0021] A ball screw, wherein the screw of the ball screw is arranged between the slide rails, one end of the screw is connected to the output shaft of the second drive motor, and the ball nut of the ball screw is arranged at the bottom of the slide box.
[0022] The beneficial effect of adopting this step is that the second drive motor drives the lead screw to rotate, the lead screw converts its own rotational motion into the linear motion of the ball nut, and the ball nut drives the slide box to move axially along the lead screw.
[0023] Furthermore: the first drive motor and the second drive motor are servo motors.
[0024] The beneficial effects of adopting this step are: the servo motor has high rotation accuracy and good reliability, and can be seamlessly integrated with control modules such as microcontrollers and PLCs to achieve flexible and precise motion control.
[0025] Furthermore: a pair of sliding rods are provided in the second chamber, and the transmission block passes through the sliding rods.
[0026] The beneficial effect of adopting this step is that the slide bar can pass through the transmission block, limiting the rotation of the transmission block so that the transmission block can only stably move forward and backward.
[0027] Further: the knife bar assembly comprises:
[0028] A push rod, one end of which is connected to the second transmission shaft, the other end of which is connected to the rear end of the guide body, the front end of which is slidably connected to a boring block, wherein an oblique groove is provided on a side of the boring block facing the guide body, and the front end of the guide body extends into the oblique groove and is tangent to the oblique groove;
[0029] A tool rod, wherein the tool rod sleeve is arranged outside the push rod, and one end of the tool rod is connected to the outer wall of the slide box, the other end of the tool rod is provided with a guide sleeve, and the guide body extends into the guide sleeve, and a vertical tool groove is opened at the front end of the guide sleeve, and the boring tool block is placed in the tool groove.
[0030] The beneficial effects of adopting this step are as follows: the push rod is inside the tool rod, and the tool rod is fixedly connected to the slide box and can move forward and backward together with the slide box. The push rod is driven by the second transmission shaft to move forward and backward inside the tool rod, and can drive the guide body to move forward and backward. The front end of the guide body moves forward and backward in the inclined groove, which allows the boring block to move up and down in the tool groove. When the boring block moves up to expose the tool groove, the boring tool on the boring block can bore the inner hole groove. When the boring block moves down, it will not contact the inner wall of the workpiece.
[0031] Further: the outer diameter of the tool rod is smaller than the outer diameter of the guide sleeve, and the outer diameter of the guide sleeve is adapted to the inner hole of the workpiece;
[0032] The inner diameter of the knife rod is consistent with the inner diameter of the guide sleeve;
[0033] The outer diameter of the guide body is matched to the inner diameter of the guide sleeve.
[0034] The beneficial effect of adopting this step: the above structure is to ensure that the guide sleeve moves stably on the inner wall of the workpiece, the guide body moves stably in the guide sleeve, and the tool rod does not contact the inner wall of the workpiece, thereby reducing friction.
[0035] Further: one end of the push rod is a thin rod, and the other end is a thick rod, the thin rod is connected to the second transmission shaft, the thick rod extends into the guide sleeve, and the outer diameter of the thick rod is adapted to the inner diameter of the guide sleeve;
[0036] The push rod and the second transmission shaft are both provided with an axial center hole, and the second transmission shaft is also provided with a radial air inlet hole at one end of the slide box, and the thick rod is also provided with a radial first air outlet hole, and the air inlet hole and the first air outlet hole are also connected to the center hole;
[0037] The guide sleeve is also provided with a second air outlet at a position corresponding to the first air outlet.
[0038] The beneficial effect of adopting this step is: the thin rod of the push rod is also to reduce the friction with the tool rod, and the thick rod is for sealing, allowing the compressed air to smoothly enter the second air outlet from the first air outlet. After the compressed air goes out from the second air outlet, the processing waste generated near the boring block can be blown out of the workpiece, avoiding the processing waste from getting stuck between the guide sleeve and the workpiece, causing roughening of the inner wall of the workpiece.
[0039] Further: the clamp assembly also includes:
[0040] A mounting seat, the mounting seat being arranged on the other side of the top surface of the frame;
[0041] A transmission box, the transmission box being arranged on the top surface of the mounting seat;
[0042] A chuck shaft, wherein the chuck shaft is arranged in the transmission box, both ends of the chuck shaft extend out of the transmission box, and the chuck is fixed at one end of the chuck shaft;
[0043] The chuck drive assembly includes a third drive motor, which is arranged on the top surface of the transmission box. A driving wheel is provided on the output shaft of the third drive motor, and a driven wheel is provided on the other end of the chuck shaft. The driving wheel and the transmission wheel are connected by a belt or a chain.
[0044] The beneficial effect of adopting this step is that the third driving motor drives the chuck shaft to rotate, thereby realizing the rotation of the workpiece.
[0045] Furthermore: a tool bar stabilizing frame is provided at the front end of the mounting seat, and a workpiece stabilizing frame is provided at the rear end of the mounting seat;
[0046] The knife bar stabilizing frame is provided with a through hole, the knife bar passes through the through hole, and a bearing bush is provided between the knife bar and the through hole;
[0047] The workpiece stabilizing frame comprises a portal frame and a support frame, the top surface of the portal frame is provided with an elastic adjustment rod, the bottom of the elastic adjustment rod is provided with a roller, the top of the support frame is provided with a roller, the workpiece is located between the portal frame and the support frame, and the roller and the roller are respectively tangent to the outer circle of the workpiece.
[0048] Beneficial effects of adopting this step: the tool bar stabilizing frame and the workpiece stabilizing frame are used to stabilize the tool bar and the workpiece respectively to ensure that the machining accuracy of the workpiece meets the design requirements.
[0049] The beneficial effects of the utility model are:
[0050] 1. The present application controls the tool bar assembly and the slide box to move forward and backward respectively through the first drive assembly and the second drive assembly, fixes the workpiece through the fixture assembly and drives the workpiece to rotate, and then automatically controls the rotation of the first drive assembly, the second drive assembly and the fixture assembly through the control cabinet to realize automatic processing of the workpiece;
[0051] 2. The present application has a simple structure and low manufacturing cost. It can replace a large-stroke machining center or CNC lathe to process workpieces, effectively control production costs, and improve product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS
[0052] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0053] Figure 1 A schematic diagram of the structure of a machine tool for boring inner holes and grooves provided by the utility model;
[0054] Figure 2 A schematic diagram of the radial cross-section structure of a slide box in a boring machine tool provided by the utility model Figure 1 ;
[0055] Figure 3A schematic diagram of the radial cross-section structure of a slide box in a boring machine tool provided by the utility model Figure 2 ;
[0056] Figure 4 The axial section structure diagram of the slide box in the internal hole boring machine provided by the utility model Figure 1 ;
[0057] Figure 5 The axial section structure diagram of the slide box in the internal hole boring machine provided by the utility model Figure 2 ;
[0058] Figure 6 A schematic diagram of the structure of an air pipe joint in a machine tool for boring internal holes provided by the utility model;
[0059] Figure 7 A schematic cross-sectional structure diagram of a tool bar assembly in a machine tool for boring internal holes and grooves provided by the utility model;
[0060] Figure 8 A schematic diagram of the end surface structure of a tool bar assembly in a machine tool for boring internal holes and grooves provided by the utility model;
[0061] Fig. 9 A schematic diagram of the structure of a push rod and a guide body in a machine tool for boring internal holes and grooves provided by the utility model;
[0062] Fig.10 A schematic diagram of the structure of a tool bar, a guide sleeve and a boring block in a machine tool for boring internal holes and grooves provided by the utility model;
[0063] Fig.11 for Figure 7 Schematic diagram of the working status of the middle A part;
[0064] Fig.12 for Figure 7 Schematic diagram of non-working state of the middle part A;
[0065] Fig.13 A schematic diagram of the structure of a tool bar stabilizing frame in a machine tool for boring internal holes and grooves provided by the utility model;
[0066] Fig.14 The present invention is a schematic structural diagram of a workpiece stabilizing frame in a machine tool for boring internal holes and grooves provided by the present invention;
[0067] Fig.15 It is the long shaft part with the inner hole full of inner hole grooves mentioned in the background technology.
[0068] Reference numerals:
[0069] 1-frame; 2-slide rail; 3-slide box; 4-tool bar assembly; 5-first drive assembly; 6-second drive assembly; 7-clamp assembly; 8-workpiece; 9-control cabinet;
[0070] 31-first chamber; 32-second chamber; 33-third chamber; 41-push rod; 42-tool bar; 43-guide body; 44-guide sleeve; 45-boring block; 51-first drive motor; 52-speed external gear pair; 53-first transmission shaft; 54-transmission block; 55-second transmission shaft; 56-slide rod; 57-intake pipe; 58-trachea joint; 71-chuck; 72-third drive motor; 73-transmission box; 74-mounting seat; 75-tool bar stabilizing frame; 76-workpiece stabilizing frame; 81-inner hole groove;
[0071] 411-thin rod; 412-thick rod; 413-first air outlet; 441-second air outlet; 442-knife groove; 451-oblique groove; 541-adapter block; 551-center hole; 761-door frame; 762-support frame;
[0072] 7611-fixed seat; 7612-elastic adjustment rod. DETAILED DESCRIPTION
[0073] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0074] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.
[0075] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0076] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.
[0077] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0078] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0079] Example
[0080] like Figure 1 As shown, the utility model provides a boring inner hole slot machine tool, comprising:
[0081] Rack 1;
[0082] A slide rail 2, wherein the slide rail 2 is disposed on one side of the top surface of the frame 1, and the slide rail 2 is generally a linear rail with a dovetail-shaped or V-shaped cross section;
[0083] A slide box 3, the slide box 3 (with a groove at the bottom or a sliding block installed) is arranged on the slide rail 2, a knife bar assembly 4 is arranged at the front end of the slide box 3, and a first driving assembly 5 is arranged at the rear end of the slide box 3, and the first driving assembly 5 is used to drive the knife bar assembly 4 to move forward and backward;
[0084] The slide rail 3 is also provided with a second driving assembly 6, and the second driving assembly 6 is used to drive the slide box 3 to move forward and backward;
[0085] A clamp assembly 7, wherein the clamp assembly 7 is arranged on the other side of the top surface of the frame 1, and the clamp assembly 7 comprises a chuck 71 and a chuck drive assembly, wherein the chuck 71 is coaxial with the tool bar assembly 4, and the chuck 71 is used to clamp the workpiece 8, and the chuck 71 can be a three-jaw chuck or a four-jaw chuck;
[0086] A control cabinet 9 is provided on one side of the frame 1, and is electrically connected to the first drive assembly 5, the second drive assembly 6 and the chuck drive assembly, wherein the control cabinet 9 is provided with an intelligent control module such as a single-chip microcomputer or a PLC, and controls the operation of the above components through a pre-selected program. Since intelligent control modules such as single-chip microcomputers belong to the prior art, the specific control program is not described in detail.
[0087] The utility model fixes the workpiece 8 to be processed by the clamp assembly 7, and then allows the slide box 3 to drive the tool rod assembly 4 to move forward and backward to realize the processing of the inner hole groove of the workpiece 8; in particular, the control cabinet 8 controls the first drive assembly 5 to drive the tool rod assembly 4 to move forward and backward to bore the inner hole groove, so as to achieve the processing accuracy of the width and depth of the inner hole groove, and the second drive assembly 6 is controlled to drive the slide box 3 as a whole (including the tool rod assembly 4, but when the slide box 6 moves, the tool rod assembly 4 does not bore holes) to move forward and backward to achieve the distance adjustment between multiple inner hole grooves, and the processing speed of the workpiece 8 is adjusted by controlling the chuck drive assembly to adapt to different materials; the machine tool has a simple structure and low manufacturing cost, which can effectively reduce the production cost, and has few control variables and a stable processing state, which can meet the needs of processing multiple inner hole grooves of long shaft parts.
[0088] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the slide box 3 is provided with a first chamber 31, a second chamber 32 and a third chamber 33 in sequence, and the first driving assembly 5 includes:
[0089] A first drive motor 51, wherein the first drive motor 51 is disposed on the rear end outer wall of the slide box 3, and an output shaft of the first drive motor 51 extends into the first chamber 31;
[0090] A speed-changing external meshing gear pair 52, wherein the speed-changing external meshing gear pair 52 is disposed in the first chamber 31, and a small gear in the speed-changing external meshing gear pair 52 is connected to the output shaft of the first drive motor 51, and a large gear in the speed-changing external meshing gear pair 52 is connected to one end of a first transmission shaft 53, and the other end of the first transmission shaft 53 extends into the second chamber 32, wherein the other end of the first transmission shaft 53 is provided with a transmission external thread; the speed-changing external meshing gear pair 52 can realize a deceleration function;
[0091] The transmission block 54 is arranged in the second chamber 32, and a transmission internal thread is provided on the side of the transmission block 54. The transmission block 54 is sleeved on the other end of the first transmission shaft 53, and the transmission internal thread is adapted to the transmission external thread. In addition, the transmission block 54 can also only have a through hole, and then a transfer block is provided on the side of the transmission block 54, and a transmission internal thread is provided on the transfer block, and the transmission block 54 is driven by the transfer block. The advantage of such a design is that after the transmission internal thread is damaged, only the transfer block needs to be replaced, and there is no need to replace the transmission block 54 (the structure of the transmission block 54 is more complicated and the processing cost is higher);
[0092] The second transmission shaft 55 is arranged in the third chamber 33, and the left end of the second transmission shaft 55 passes through the partition between the second chamber 32 and the third chamber 33, and is connected to the transmission block 54, the right end of the second transmission shaft 55 slides in the side wall of the third chamber 33, and the right end of the second transmission shaft 55 is connected to the knife rod assembly 4.
[0093] The first drive motor 51 achieves a deceleration effect through the speed-changing external meshing gear pair 52, and transmits the power to the first transmission shaft 53 after deceleration. Then the first transmission shaft 53 converts the rotational motion into linear motion through the transmission thread, allowing the transmission block 54 to achieve forward and backward displacement, and then the transmission block 54 can drive the second transmission shaft 55 to achieve forward and backward displacement, and the second transmission shaft 55 finally drives the tool rod assembly 4 to achieve forward and backward displacement, thereby achieving the purpose of boring the inner hole groove.
[0094] On the basis of the above technical solution, the second driving assembly 6 comprises:
[0095] A second drive motor, wherein the second drive motor is arranged at one end of the slide rail 2;
[0096] A ball screw, wherein the screw of the ball screw is arranged between the slide rails 2, one end of the screw is connected to the output shaft of the second drive motor, and the ball nut of the ball screw is arranged at the bottom of the slide box 3. A mounting block for storing the ball nut can be arranged at the bottom of the slide box 3.
[0097] The second drive motor drives the lead screw to rotate, and the lead screw converts its own rotational motion into the linear motion of the ball nut, and the ball nut drives the slide box 3 to move axially along the lead screw.
[0098] On the basis of the above technical solution, the first drive motor 51 and the second drive motor are servo motors.
[0099] The servo motor has high rotation accuracy and good reliability, and can be seamlessly integrated with control modules such as microcontrollers and PLCs to achieve flexible and precise motion control.
[0100] On the basis of the above technical solution, a pair of sliding rods 56 are provided in the second chamber 32 , and the transmission block 54 passes through the sliding rods 56 .
[0101] The slide bar 56 can pass through the transmission block 54 to limit the rotation of the transmission block 54 so that the transmission block 54 can only stably move forward and backward.
[0102] like Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, the knife bar assembly 4 includes:
[0103] A push rod 41, one end of which is connected to the second transmission shaft 55, and the other end of which is connected to the rear end of a guide body 43, and the front end of which is slidably connected to a boring block 45, wherein a side of the boring block 45 facing the guide body 43 is provided with an inclined groove 451, and the front end of the guide body 43 extends into the inclined groove 451 and is tangent to the inclined groove 451, wherein the front end of the guide body 43 can be a sphere or a cube, except that the top and bottom surfaces of the cube are inclined surfaces, and the inclination of the inclined surfaces is adapted to the inclined groove 451;
[0104] The knife bar 42 is sleeved outside the push rod 41, and one end of the knife bar 42 is connected to the outer wall of the slide box 3, and the other end of the knife bar 42 is provided with a guide sleeve 44, and the guide body 43 extends into the guide sleeve 44, and the front end of the guide sleeve 44 is provided with a vertical knife groove 442, and the boring block 45 is placed in the knife groove 442. In the figure, the boring tool on the boring block 45 is simplified by the vertical line at the top, and its specific installation structure belongs to the existing technology and is not repeated.
[0105] The connection between the push rod 41 and the second transmission shaft 55, the connection between the push rod 41 and the guide body 43, and the connection between the knife bar 42 and the guide sleeve 44 are all in the form of stepped shafts and stepped holes, part of the stepped shafts and stepped holes are threads, and part of them are tightly matched polished rods, the threads are used for connection, and the polished rod can ensure the coaxiality of the two when connected. In particular, the polished rod at the connection between the push rod 41 and the guide body 43 is also provided with a sealing ring, which can prevent the leakage of compressed air in the following text.
[0106] The push rod 41 is inside the tool rod 42, and the tool rod 42 is fixedly connected to the slide box 3 and can move forward and backward together with the slide box 3. The push rod 41 is driven by the second transmission shaft 55 to move forward and backward inside the tool rod 42, and can drive the guide body 43 to move forward and backward. The front end of the guide body 43 moves back and forth in the inclined groove 451, which can allow the boring block 45 to move up and down in the tool groove 442. When the boring block 45 moves up to expose the tool groove 442, the boring tool on the boring block 45 can bore the inner hole groove. When the boring block 45 moves down, it will not contact the inner wall of the workpiece 8.
[0107] On the basis of the above technical solution, the outer diameter of the tool rod 42 is smaller than the outer diameter of the guide sleeve 44, and the outer diameter of the guide sleeve 44 is adapted to the inner hole of the workpiece 8;
[0108] The inner diameter of the knife rod 42 is consistent with the inner diameter of the guide sleeve 44;
[0109] The outer diameter of the guide body 43 is matched to the inner diameter of the guide sleeve 44 .
[0110] The above structure is to ensure that the guide sleeve 44 moves stably on the inner wall of the workpiece 8, the guide body 43 moves stably in the guide sleeve 44, to ensure the movement accuracy, and the tool rod 42 does not contact the inner wall of the workpiece 8, to reduce friction.
[0111] like Figure 4 , Figure 6 and Figure 7 As shown, one end of the push rod 41 is a thin rod 411, and the other end is a thick rod 412, the thin rod 411 is connected to the second transmission shaft 55, the thick rod 412 extends into the guide sleeve 44, and the outer diameter of the thick rod 412 is adapted to the inner diameter of the guide sleeve 44;
[0112] The push rod 41 and the second transmission shaft 55 are both provided with an axial center hole 551, and the second transmission shaft 55 is also provided with a radial air inlet hole at one end of the slide box 3, the air inlet hole is connected to the air inlet pipe 57, the air inlet pipe 57 is connected to the air pipe joint 58, the air pipe joint 58 is connected to compressed air, wherein the air inlet pipe 57 can be a hard pipe or a soft pipe, as long as it does not interfere with the slide rod 56; the thick rod 412 is also provided with a radial first air outlet hole 413, the air inlet hole and the first air outlet hole 413 are also connected to the center hole 551;
[0113] The guide sleeve 44 is further provided with a second air outlet 441 at a position corresponding to the first air outlet 413. Figure 8 As shown, two notches are formed at the front end of the guide sleeve 44 , and the notches are used to make room for the second air outlet holes 441 .
[0114] The thin rod 411 of the push rod 41 is also for reducing the friction with the tool rod 42, and the thick rod 412 is for sealing, allowing the compressed air to smoothly enter the second air outlet 441 from the first air outlet 413. After the compressed air goes out from the second air outlet 441, the processing waste generated near the boring block 45 can be blown out of the workpiece 8 to prevent the processing waste from being stuck between the guide sleeve 44 and the workpiece 8, causing the inner wall of the workpiece 8 to be roughened.
[0115] like Figure 1 As shown, the clamp assembly 7 also includes:
[0116] A mounting seat 74, the mounting seat 74 is arranged on the other side of the top surface of the frame 1;
[0117] A transmission box 73, wherein the transmission box 73 is arranged on the top surface of the mounting seat 74;
[0118] A chuck shaft, wherein the chuck shaft is disposed in the transmission box 73, both ends of the chuck shaft extend out of the transmission box 73, and the chuck 71 is fixed to one end of the chuck shaft;
[0119] The chuck drive assembly includes a third drive motor 72, which is arranged on the top surface of the transmission box 73. A driving wheel is provided on the output shaft of the third drive motor 72, and a driven wheel is provided on the other end of the chuck shaft. The driving wheel and the transmission wheel are connected by a belt or a chain.
[0120] The third driving motor 72 drives the chuck shaft to rotate, thereby realizing the rotation of the workpiece 8 .
[0121] like Fig.13 As shown, a tool bar stabilizing frame 75 is provided at the front end of the mounting seat 74, and a workpiece stabilizing frame 76 is provided at the rear end of the mounting seat 74;
[0122] The knife bar stabilizing frame 75 is provided with a through hole, the knife bar 42 passes through the through hole, and a bearing bush is provided between the knife bar 42 and the through hole;
[0123] The workpiece stabilizing frame 76 includes a portal frame 761 and a support frame 762. The portal frame 761 is installed on the mounting seat 74 through a fixing seat 7611, and an elastic adjustment rod 7612 is provided on the top surface of the portal frame 761. A roller is provided at the bottom of the elastic adjustment rod 7612. A roller is provided on the top of the support frame 762. The workpiece 8 is located between the portal frame 761 and the support frame 762, and the roller and the roller are tangent to the outer circle of the workpiece 8 respectively. Fig.14 The two support frames 762 of different heights are intended to illustrate matching with workpieces 8 of different diameters.
[0124] The tool bar stabilizing frame 75 and the workpiece stabilizing frame 76 are used to stabilize the tool bar 42 and the workpiece 8 respectively, so as to ensure that the processing accuracy of the workpiece 8 meets the design requirements.
[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A machine tool for boring internal holes, characterized in that: include: frame; A slide rail, the slide rail is arranged on one side of the top surface of the frame, and the slide rail is a dovetail guide rail or a V-shaped guide rail; A slide box, the slide box is arranged on the slide rail, a knife bar assembly is arranged at the front end of the slide box, and a first drive assembly is arranged at the rear end of the slide box, the first drive assembly is used to drive the knife bar assembly to move forward and backward; The slide rail is also provided with a second driving assembly, and the second driving assembly is used to drive the slide box to move forward and backward; A fixture assembly, the fixture assembly is arranged on the other side of the top surface of the frame, and the fixture assembly includes a chuck and a chuck drive assembly, the chuck is coaxial with the tool bar assembly, and the chuck is used to clamp a workpiece; A control cabinet is arranged on one side of the frame, and the control cabinet is electrically connected to the first drive assembly, the second drive assembly and the chuck drive assembly.
2. The internal hole boring machine tool according to claim 1, characterized in that: The slide box is provided with a first chamber, a second chamber and a third chamber in sequence, and the first driving assembly comprises: a first drive motor, the first drive motor being arranged on the rear end outer wall of the slide box, and the output shaft of the first drive motor extending into the first chamber; A speed-changing external gear pair, wherein the speed-changing external gear pair is disposed in the first chamber, and a small gear in the speed-changing external gear pair is connected to an output shaft of the first drive motor, and a large gear in the speed-changing external gear pair is connected to one end of a first transmission shaft, and the other end of the first transmission shaft extends into the second chamber, wherein a transmission external thread is disposed at the other end of the first transmission shaft; A transmission block, the transmission block is arranged in the second chamber, a transmission internal thread is opened on the side of the transmission block, the transmission block is sleeved on the other end of the first transmission shaft, and the transmission internal thread is adapted to the transmission external thread; A second transmission shaft, wherein the second transmission shaft is arranged in the third chamber, and the left end of the second transmission shaft passes through the partition between the second chamber and the third chamber and is connected to the transmission block, and the right end of the second transmission shaft slides in the side wall of the third chamber, and the right end of the second transmission shaft is connected to the knife rod assembly.
3. The internal hole boring machine tool according to claim 2, characterized in that: The second driving assembly comprises: a second drive motor, the second drive motor being arranged at one end of the slide rail; A ball screw, wherein the screw of the ball screw is arranged between the slide rails, one end of the screw is connected to the output shaft of the second drive motor, and the ball nut of the ball screw is arranged at the bottom of the slide box.
4. The internal hole boring machine tool according to claim 3, characterized in that: The first drive motor and the second drive motor are servo motors.
5. The internal hole boring machine tool according to claim 2, characterized in that: A pair of sliding rods is disposed in the second chamber, and the transmission block passes through the sliding rods.
6. The internal hole boring machine tool according to claim 2, characterized in that: The knife bar assembly comprises: A push rod, one end of which is connected to the second transmission shaft, the other end of which is connected to the rear end of the guide body, the front end of which is slidably connected to a boring block, wherein an oblique groove is provided on a side of the boring block facing the guide body, and the front end of the guide body extends into the oblique groove and is tangent to the oblique groove; A tool rod, wherein the tool rod sleeve is arranged outside the push rod, and one end of the tool rod is connected to the outer wall of the slide box, the other end of the tool rod is provided with a guide sleeve, and the guide body extends into the guide sleeve, and a vertical tool groove is opened at the front end of the guide sleeve, and the boring tool block is placed in the tool groove.
7. The internal hole boring machine tool according to claim 6, characterized in that: The outer diameter of the tool rod is smaller than the outer diameter of the guide sleeve, and the outer diameter of the guide sleeve is adapted to the inner hole of the workpiece; The inner diameter of the knife rod is consistent with the inner diameter of the guide sleeve; The outer diameter of the guide body is matched to the inner diameter of the guide sleeve.
8. The internal hole boring machine tool according to claim 7, characterized in that: One end of the push rod is a thin rod, and the other end is a thick rod, the thin rod is connected to the second transmission shaft, the thick rod extends into the guide sleeve, and the outer diameter of the thick rod is adapted to the inner diameter of the guide sleeve; The push rod and the second transmission shaft are both provided with an axial center hole, and the second transmission shaft is also provided with a radial air inlet hole at one end of the slide box, and the thick rod is also provided with a radial first air outlet hole, and the air inlet hole and the first air outlet hole are also connected to the center hole; The guide sleeve is also provided with a second air outlet at a position corresponding to the first air outlet.
9. The internal hole boring machine tool according to claim 1, characterized in that: The clamp assembly also includes: A mounting seat, the mounting seat being arranged on the other side of the top surface of the frame; A transmission box, the transmission box being arranged on the top surface of the mounting seat; A chuck shaft, wherein the chuck shaft is arranged in the transmission box, both ends of the chuck shaft extend out of the transmission box, and the chuck is fixed at one end of the chuck shaft; The chuck drive assembly includes a third drive motor, which is arranged on the top surface of the transmission box. A driving wheel is provided on the output shaft of the third drive motor, and a driven wheel is provided on the other end of the chuck shaft. The driving wheel and the driven wheel are connected by a belt or a chain.
10. The internal hole boring machine tool according to claim 9, characterized in that: The front end of the mounting seat is provided with a tool bar stabilizing frame, and the rear end of the mounting seat is provided with a workpiece stabilizing frame; The knife bar stabilizing frame is provided with a through hole, the knife bar passes through the through hole, and a bearing bush is provided between the knife bar and the through hole; The workpiece stabilizing frame comprises a portal frame and a support frame, the top surface of the portal frame is provided with an elastic adjustment rod, the bottom of the elastic adjustment rod is provided with a roller, the top of the support frame is provided with a roller, the workpiece is located between the portal frame and the support frame, and the roller and the roller are respectively tangent to the outer circle of the workpiece.