Multi-axis numerical control grinding machine
By introducing a lead screw movement mechanism with a motor drive and nitrogen counterweight cylinder into a CNC grinding machine, the problem of low grinding accuracy in the prior art has been solved, achieving higher machining accuracy and longer service life, while reducing maintenance costs.
Patent Information
- Application Number
- CN202422396524.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing CNC grinding machines have the problem of low machining accuracy during the grinding process, especially the insufficient accuracy caused by the use of oil cylinders for mobile drive under multi-coordinate control.
The system employs a first lead screw moving mechanism and a second lead screw moving mechanism, combined with a guide rail moving mechanism, and is driven by a motor and a nitrogen counterweight cylinder, eliminating the need for a spindle sleeve and improving accuracy and service life.
It improves grinding accuracy and service life, reduces maintenance costs, ensures better spindle heat dissipation, avoids tool drop, and achieves more precise machining feed.
Smart Images
Figure CN223466065U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to numerical control grinding machine technical field, concretely is a kind of multi-axis numerical control grinding machine. BACKGROUND
[0002] Numerical control machine tool is a kind of automatic machine tool equipped with program control system of digital control machine tool.The control system can logically process the program with control code or other symbolic instruction specification, and it is translated into code, is expressed with coded number, is input numerical control device through information carrier.Various control signals are sent by numerical control device after operation processing, control the action of machine tool, according to the shape and size required by drawing, automatically processes spare parts.It is a kind of flexible, high-efficiency automatic machine tool that numerical control machine tool solves the problem of complex, precision, small batch, multi-specification spare parts processing, and it represents the development direction of modern machine tool control technology.Numerical control grinding machine is a kind of grinding machine that can grind various metal products.In order to realize the processing of complex shape, it is necessary to use multi-coordinate control, however, the movement of current numerical control grinding machine is driven by oil cylinder, and there is the shortcoming of low machining precision in grinding process. SUMMARY
[0003] The utility model solves the technical problem in providing a kind of multi-axis numerical control grinding machine of prior art.
[0004] To realize the above-mentioned purpose, the utility model provides the following technical scheme: a kind of multi-axis numerical control grinding machine, including machine tool, the first screw rod moving mechanism is equipped in the machine tool front side, the workbench is fixedly connected with the machine tool top, cut the workbench is U-shaped in cross section, the guide rail moving mechanism is installed on the machine tool, the second screw rod moving mechanism is equipped in the workbench.
[0005] Preferably, the first lead screw moving mechanism comprises a stand, the stand is fixedly connected to the side wall of the machine tool, first linear guides are arranged on both sides of the inner cavity of the stand, a first tail end seat is fixedly connected to the bottom of the stand, a first motor is arranged above the stand, a motor shaft of the first motor is fixedly connected with a first coupling, a first motor seat is fixedly connected to the top of the stand, a bearing pressing sleeve is installed in the inner cavity of the stand, a first locking nut, three groups of lead screw supporting bearings, a first bearing pressing cover and a first lead screw nut are installed on the bearing pressing sleeve, a first shaft elastic retaining ring and two groups of deep groove ball bearings I are installed above the first tail end seat, a lead screw is fixedly connected to the bottom end of the first coupling, the lead screw sequentially penetrates through the first locking nut, the three groups of lead screw supporting bearings, the first bearing pressing cover, the first shaft elastic retaining ring and the two groups of deep groove ball bearings I from bottom to top, and is movably connected to the first tail end seat, a first nut seat is installed on the lead screw, a counterweight cylinder energy storage tank and a nitrogen counterweight cylinder are arranged on the stand, a nitrogen counterweight cylinder support is installed on the nitrogen counterweight cylinder, and the nitrogen counterweight cylinder is fixedly connected to the stand.
[0006] Preferably, the second lead screw moving mechanism comprises a sliding base, the sliding base is slidably connected to the side wall of the first linear guide, the sliding base is fixedly connected with the first nut seat, second linear guides are arranged on both sides of the inner cavity of the sliding base, a second tail end seat is fixedly connected to the inner cavity of the sliding base, a second motor is arranged on the left side of the sliding base, a motor shaft of the second motor is fixedly connected with a second coupling, a speed reducer, a second locking nut, two groups of conical ball bearings II and a second lead screw nut, a second motor seat is fixedly connected to the second motor, the second motor seat is fixedly connected to the sliding base, a second shaft elastic retaining ring and two groups of deep groove ball bearings II are installed on the second tail end seat, a ball screw is fixedly connected to the bottom end of the second coupling, the ball screw sequentially penetrates through the second locking nut, the two groups of conical ball bearings II, the second tail end seat and the two groups of deep groove ball bearings II from bottom to top, and is movably connected to the second shaft elastic retaining ring, a second nut seat is installed on the ball screw, and a polishing mechanism is arranged on one side of the second lead screw moving mechanism.
[0007] Preferably, the polishing mechanism comprises a sliding plate movably connected to the second linear guide, the second nut seat is fixedly connected to the sliding plate, the bottom end of the sliding plate is fixedly connected with a main bearing box, the side wall of the main bearing box is fixedly connected with a grinding wheel cover, the grinding wheel cover is provided with a grinding wheel in the inner cavity, the grinding wheel is provided with a grinding disc in the inner cavity, the grinding disc is provided with an end cover and a second bearing gland in the inner cavity, the other side of the main bearing box is fixedly connected with a main shaft motor, the motor shaft of the main shaft motor is fixedly connected with a third connecting shaft, the inner cavity of the main bearing box is provided with a third locking nut, a rear oil ring, two angle contact bearings one, a front oil ring, a fourth locking nut, a pressing sleeve, two angle contact bearings two and an inner tapered double-row roller bearing, the third connecting shaft is fixedly connected with a main shaft, the main shaft sequentially passes through the third locking nut, the rear oil ring, the two angle contact bearings one, the front oil ring, the fourth locking nut, the pressing sleeve, the two angle contact bearings two and the inner tapered double-row roller bearing, and extends into the inner cavity of the grinding wheel cover and is inserted into the inner cavity of the second bearing gland.
[0008] Preferably, the first motor, the second motor and the main shaft motor are electrically connected with the power cord through wires.
[0009] Compared with the prior art, the utility model has the advantages that:
[0010] 1、The first screw rod moving mechanism and the second screw rod moving mechanism of the utility model are of a hard rail, the polishing precision is more stable, the service life is longer, and the maintenance cost is lower.
[0011] 2、The second screw rod moving mechanism has a counterweight, the second screw rod moving mechanism of the same model grinding machine does not have a counterweight, the second screw rod moving mechanism with a counterweight cannot drop the tool vertically downward, the service life of the second screw rod moving mechanism is longer, and the tool feeding is more accurate during machining.
[0012] 3、In the polishing mechanism, the main shaft is directly installed into the main shaft box casting, and the grinding machine of the prior art has a main shaft sleeve, the design scheme cancels the main shaft sleeve component, the main shaft is better in heat dissipation, and the cost is low. DETAILED DESCRIPTION
[0013] Figure 1 It is a perspective view of the utility model;
[0014] Figure 2 It is a perspective view of the first guide rail moving mechanism of the utility model;
[0015] Figure 3 It is a perspective view of the second guide rail moving mechanism of the utility model;
[0016] Figure 4 It is a perspective view of the polishing mechanism of the utility model.
[0017] The figure label: 1, machine tool; 2, worktable; 3, guide rail moving mechanism; 4, stand; 5, first linear guide rail; 6, first motor; 7, first coupling; 8, first motor base; 9, bearing pressing sleeve; 10, first locking nut; 11, three groups of screw rod supporting bearings; 12, first bearing gland; 13, first tail end seat; 14, first shaft elastic retainer; 15, two groups of deep groove ball bearings one; 16, screw rod; 17, first nut seat; 18, counterweight cylinder energy storage tank; 19, nitrogen counterweight cylinder; 20, slide; 21, second linear guide rail; 22, second tail end seat; 23, second motor; 24, second coupling; 25, speed reducer; 26, second locking nut; 27, two groups of tapered ball bearings two; 28, two groups of deep groove ball bearings two; 29, ball screw; 30, second nut seat; 31, slide plate; 32, main bearing box; 33, grinding wheel cover; 34, grinding wheel; 35, grinding wheel disc; 36, end cover; 37, main shaft motor; 38, third coupling; 39, third locking nut; 40, rear oil ring; 41, two angular contact bearings one; 42, front oil ring; 43, fourth locking nut; 44, pressing sleeve; 45, two angular contact bearings two; 46, inner taper double-row roller bearing; 47, main shaft; 48, first screw rod nut; 49, nitrogen counterweight cylinder; 50, second motor base; 51, second screw rod nut; 52, second shaft elastic retainer; 53, second bearing gland. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0019] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a multi-axis numerical control grinding machine, including machine tool 1, machine tool 1 front side is equipped with first screw rod moving mechanism, machine tool 1 top end is fixedly connected with worktable 2, cut worktable 2 is U-shaped cross section, machine tool 1 is installed with guide rail moving mechanism 3, worktable 2 is equipped with second screw rod moving mechanism.
[0020] The first screw rod moving mechanism comprises a column 4 fixedly connected to the side wall of the machine tool 1, first linear guides 5 arranged on both sides of the inner cavity of the column 4, a first tail end seat 13 fixedly connected to the bottom of the column 4, a first motor 6 arranged above the column 4, a first connecting shaft 7 fixedly connected to the motor shaft of the first motor 6, a first motor seat 8 fixedly connected to the top of the column 4, a bearing pressing sleeve 9 arranged in the inner cavity of the column 4, a first locking nut 10, three groups of screw rod supporting bearings 11, a first bearing pressing cover 12 and a first screw rod nut 48 arranged on the bearing pressing sleeve 9, a first shaft elastic retaining ring 14 and two groups of deep groove ball bearings I 15 arranged above the first tail end seat 13, a screw rod 16 fixedly connected to the bottom end of the first connecting shaft 7, the bottom end of the screw rod 16 sequentially penetrating through the first locking nut 10, the three groups of screw rod supporting bearings 11, the first bearing pressing cover 12, the first shaft elastic retaining ring 14 and the two groups of deep groove ball bearings I 15 and movably connected to the first tail end seat 13, a first nut seat 17 arranged on the screw rod 16, a counterweight cylinder energy storage tank 18 and a nitrogen counterweight cylinder 19 arranged on the column 4, a nitrogen counterweight cylinder support 49 arranged on the nitrogen counterweight cylinder 19 and the nitrogen counterweight cylinder 19 fixedly connected to the column 4;
[0021] The second screw rod moving mechanism comprises a sliding base 20, which is slidingly connected to the side wall of the first linear guide rail 5, and is fixedly connected with the first nut base 17. The sliding base 20 is provided with a second linear guide rail 21 on both sides of the inner cavity thereof. The inner cavity of the sliding base 20 is fixedly connected with a second tail end base 22. The left side of the sliding base 20 is provided with a second motor 23. The motor shaft of the second motor 23 is fixedly connected with a second connecting shaft 24, a speed reducer 25, a second locking nut 26, two sets of conical ball bearings 27 and a second screw rod nut 51. The second motor 23 is fixedly connected with a second motor base 50, which is fixedly connected to the sliding base 20. The second tail end base 22 is installed with a second shaft elastic baffle 52 and two sets of deep groove ball bearings 28. The bottom end of the second connecting shaft 24 is fixedly connected with a ball screw rod 29. The bottom end of the ball screw rod 29 sequentially penetrates through the second locking nut 26, the two sets of conical ball bearings 27, the second tail end base 22 and the two sets of deep groove ball bearings 28, and is movably connected to the second shaft elastic baffle 52. The ball screw rod 29 is installed with a second nut base 30. One side of the second screw rod moving mechanism is provided with a polishing mechanism. The polishing mechanism comprises a sliding plate 31, which is movably connected to the second linear guide rail 21. The second nut base 30 is fixedly connected with the sliding plate 31. The bottom end of the sliding plate 31 is fixedly connected with a main bearing box 32. The side wall of the main bearing box 32 is fixedly connected with a grinding wheel cover 33. The inner cavity of the grinding wheel cover 33 is provided with a grinding wheel 34. The inner cavity of the grinding wheel 34 is installed with a grinding wheel disc 35, an end cover 36 and a second bearing pressing cover 53. The other side of the main bearing box 32 is fixedly connected with a main shaft motor 37. The motor shaft of the main shaft motor 37 is fixedly connected with a third connecting shaft 38. The inner cavity of the main bearing box 32 is installed with a third locking nut 39, a rear oil ring 40, two angular contact bearings 41, a front oil ring 42, a fourth locking nut 43, a pressing sleeve 44, two angular contact bearings 45 and an inner taper double-row roller bearing 46. The third connecting shaft 38 is fixedly connected with a main shaft 47. The main shaft 47 sequentially penetrates through the third locking nut 39, the rear oil ring 40, the two angular contact bearings 41, the front oil ring 42, the fourth locking nut 43, the pressing sleeve 44, the two angular contact bearings 45 and the inner taper double-row roller bearing 46, and extends into the inner cavity of the grinding wheel cover 33, and is inserted into the inner cavity of the second bearing pressing cover 53. The first motor 6, the second motor 23 and the main shaft motor 37 are electrically connected with the power cord through wires. The machine tool 1, the workbench 2, the guide rail moving mechanism 3, the first screw rod moving mechanism, the second screw rod moving mechanism and the polishing mechanism are provided on the machine tool 1. The guide rail moving mechanism 3 controls the movement of the workbench 2 along the guide rail moving mechanism 3. The first screw rod moving mechanism is provided on one side of the machine tool 1, and controls the movement of the second screw rod moving mechanism along the first screw rod. The polishing mechanism is fixed to the second screw rod moving mechanism. In addition, the first screw rod moving mechanism is internally provided with a nitrogen counterweight cylinder energy storage tank 18 and a nitrogen counterweight cylinder 19, which are used for supporting the second screw rod moving mechanism. The first screw rod moving mechanism and the second screw rod moving mechanism are both hard rails. Other similar grinding machines are more stable in polishing precision, have a longer service life and a lower maintenance cost.The second screw moving mechanism has a counterweight, the same grinding machine second screw moving mechanism does not have a counterweight, the second screw moving mechanism with the counterweight cannot drop the tool vertically downward, the service life of the second screw moving mechanism is longer, and the processing tool feeding is more accurate; in the grinding mechanism, the main shaft is directly installed into the main bearing box 32 casting, and the existing grinding machine has a main shaft sleeve, the design scheme cancels the main shaft sleeve component, the main shaft is better in heat dissipation, and the cost is low.
[0022] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A multi-axis CNC grinding machine comprising a machine tool (1), characterized in that: The machine tool (1) front side is equipped with first screw rod moving mechanism, the machine tool (1) top end fixedly connected with workbench (2), cut the workbench (2) is the cross section for U character, the machine tool (1) is installed with guide rail moving mechanism (3), the workbench (2) is equipped with second screw rod moving mechanism, the first screw rod moving mechanism includes stand (4), the stand (4) fixedly connected on the side wall of machine tool (1), the stand (4) inner chamber both sides are equipped with first linear guide rail (5), the stand (4) bottom fixedly connected with first tail end seat (13), the stand (4) top is equipped with first motor (6), the motor shaft of first motor (6) is fixedly connected with first coupling (7), first motor (6) is fixedly connected with first motor base (8) first motor base (8) is fixedly connected on the top of stand (4), the stand (4) inner chamber is installed with bearing pressing sleeve (9), the bearing pressing sleeve (9) is installed with first locking nut (10), three groups of screw rod support bearing (11), first bearing pressing cover (12) and first screw rod nut (48), the first tail end seat (13) top is installed with first shaft elastic baffle ring (14) and two groups of deep groove ball bearing one (15), the first coupling (7) bottom end fixedly connected with screw rod (16), the screw rod (16) bottom end sequentially passes through first locking nut (10), three groups of screw rod support bearing (11), first bearing pressing cover (12), first shaft elastic baffle ring (14) and two groups of deep groove ball bearing one (15), and is movably connected on first tail end seat (13), the screw rod (16) is installed with first nut seat (17), the stand (4) is equipped with counterweight cylinder energy storage tank (18) and nitrogen counterweight cylinder (19), the nitrogen counterweight cylinder (19) is installed with nitrogen counterweight cylinder support (49), the nitrogen counterweight cylinder (19) is fixedly connected on the stand (4);The second screw rod moving mechanism comprises a sliding base (20) which is slidingly connected to the side wall of the first linear guide rail (5), the sliding base (20) is fixedly connected with the first nut base (17), the inner cavity of the sliding base (20) is provided with the second linear guide rail (21) on both sides, the inner cavity of the sliding base (20) is fixedly connected with the second tail end base (22), the left side of the sliding base (20) is provided with the second motor (23), the motor shaft of the second motor (23) is fixedly connected with the second coupling (24), the speed reducer (25), the second locking nut (26), the second group of conical ball bearings (27) and the second screw rod nut (51), the second motor (23) is fixedly connected with the second motor base (50), the second motor base (50) is fixedly connected to the sliding base (20), the second tail end base (22) is provided with the second shaft elastic retaining ring (52) and the second group of deep groove ball bearings (28), the bottom end of the second coupling (24) is fixedly connected with the ball screw rod (29), the bottom end of the ball screw rod (29) sequentially penetrates through the second locking nut (26), the second group of conical ball bearings (27), the second tail end base (22) and the second group of deep groove ball bearings (28) and is movably connected to the second shaft elastic retaining ring (52), the ball screw rod (29) is provided with the second nut base (30), and one side of the second screw rod moving mechanism is provided with the polishing mechanism.
2. The multi-axis CNC grinding machine of claim 1, wherein: The grinding mechanism includes a slide plate (31), the slide plate is movably connected to the second linear guide rail (21), the second nut seat (30) is fixedly connected to the slide plate (31), the bottom end of the slide plate (31) is fixedly connected to the main bearing box (32), the side wall of the main bearing box (32) is fixedly connected to the grinding wheel cover (33), the inner cavity of the grinding wheel cover (33) is provided with a grinding wheel (34), the inner cavity of the grinding wheel (34) is equipped with a grinding wheel disc (35), the inner cavity of the grinding wheel disc (35) is equipped with an end cover (36) and a second bearing pressure cover (53), the other side of the main bearing box (32) is fixedly connected to the spindle motor (37), the motor shaft of the spindle motor (37) is fixedly connected to the third coupling (38), the main bearing box (3 2) The inner cavity is installed with a third locking nut (39), a rear oil ring (40), two angular contact bearings (41), a front oil ring (42) and a fourth locking nut (43), a pressing sleeve (44), two angular contact bearings (45) and an inner tapered double-row roller bearing (46); the third coupling (38) is fixedly connected with a main shaft (47); the main shaft (47) passes through the third locking nut (39), the rear oil ring (40), two angular contact bearings (41), the front oil ring (42) and the fourth locking nut (43), the pressing sleeve (44), two angular contact bearings (45) and an inner tapered double-row roller bearing (46) in sequence, and extends to the inner cavity of the grinding wheel cover (33), and is plugged into the inner cavity of the second bearing cover (53).
3. A multi-axis CNC grinding machine according to claim 2, characterized in that: The first motor (6), the second motor (23) and the spindle motor (37) are electrically connected to the power supply wires via conductive wires.