A linear motor grinding machine workbench

Abstract

The present invention relates to the technical field of grinding machines, and discloses a linear motor grinding machine worktable, including a linear motor, a bed, an auxiliary slide, and a working slide arranged above the auxiliary slide, the linear motor is arranged between the auxiliary slide and the bed, the linear motor includes a primary and a secondary, the primary is fixed on the top of the bed, the secondary is fixedly connected to the bottom of the auxiliary slide, linear guides are respectively arranged on both sides of the top of the bed, a working slider and an auxiliary slider are arranged on the linear guide, the working slider is fixedly connected to the working slide, the auxiliary slider is fixedly connected to the auxiliary slide, the working slide and the auxiliary slider are fixedly connected in the length direction of the linear guide, and the working slide and the auxiliary slider are slidably connected in the vertical direction. The present invention can avoid the suction between the primary and secondary of the linear motor directly acting on the working slide, and has high working precision.

Description

Technical Field

[0001] The invention relates to the technical field of grinding machines, in particular to a linear motor grinding machine workbench. Background Art

[0002] At present, grinding machines generally use linear motors to drive the movement of the working slide of the grinding machine. Since linear motors have the characteristics of fast drive response and high motion rigidity, the conventional installation method in grinding machines is to fix the primary of the linear motor on the top of the bed and the secondary of the linear motor on the bottom of the working slide. The secondary and primary move in coordination to drive the movement of the working slide. However, there is an objective vertical suction force between the primary and secondary of the linear motor that is 2 to 3 times the axial thrust of the linear motor. This suction force will produce certain fluctuations during the change of the gap between the primary and secondary, or during the reversing acceleration and deceleration process. If the conventional installation method of directly installing the secondary of the linear motor to the bottom of the working slide of the grinder is adopted, this suction force will directly act on the working slide, causing the working slide to vibrate during the movement. There is a risk of grinding vibration marks when the grinder is grinding, affecting the accuracy and quality of grinding. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a linear motor grinding machine worktable with high working precision, which can avoid the suction force between the primary and secondary of the linear motor directly acting on the working slide.

[0004] In order to achieve the above-mentioned objectives, the present invention provides a linear motor grinding machine worktable, comprising a linear motor, a bed, an auxiliary slide and a working slide arranged above the auxiliary slide, the linear motor is arranged between the auxiliary slide and the bed, the linear motor comprises a primary and a secondary, the primary is fixed to the top of the bed, the secondary is fixedly connected to the bottom of the auxiliary slide, linear guide rails are respectively provided on both sides of the top of the bed, a working slide and an auxiliary slide are provided on the linear guide rails, the working slide is fixedly connected to the working slide, the auxiliary slide is fixedly connected to the auxiliary slide, the working slide and the auxiliary slide are fixedly connected in the length direction of the linear guide, and the working slide and the auxiliary slide are slidably connected in the vertical direction.

[0005] As a preferred solution of the present invention, there are gaps between the top surface of the auxiliary sliding block and the top surface of the auxiliary sliding table and the bottom surface of the working sliding table respectively.

[0006] As a preferred solution of the present invention, the working slide is connected to the auxiliary slide via a vertical sliding pair, the vertical sliding pair comprises a vertically arranged slide rail and a slide block slidably connected to the slide rail, the slide rail is fixedly connected to the auxiliary slide block, and the slide block is fixedly connected to the working slide.

[0007] As a preferred solution of the present invention, an auxiliary slide is fixed on the top of the auxiliary sliding block, and the auxiliary slide is connected to the auxiliary slide. The bottom of the working slide is provided with a sliding groove that can slide with the auxiliary slide in the vertical direction, and there is a gap between the top surface of the auxiliary slide and the inner bottom surface of the sliding groove.

[0008] As a preferred solution of the present invention, the auxiliary slide is arranged between the linear guide rails on both sides, a key block is provided on the side of the auxiliary slide close to the auxiliary slide, and a key slot cooperating with the key block is provided on the top of the auxiliary slide.

[0009] As a preferred solution of the present invention, a plurality of positioning bosses are provided on the top of both sides of the auxiliary slide along the length direction of the bed, and the key grooves are formed between the adjacent positioning bosses along the length direction of the bed.

[0010] As a preferred solution of the present invention, the side of the sliding groove away from the auxiliary slide is open, and the auxiliary slide plate and the sliding groove can be slidably matched along the width direction of the bed.

[0011] As a preferred solution of the present invention, a first connecting member is provided on the side of the auxiliary slide away from the auxiliary slide, the auxiliary slide is fixedly connected to the auxiliary slide via the first connecting member, the auxiliary slide is fixedly connected to the top of the auxiliary slide via a second connecting member, and the second connecting member passes through the working slide.

[0012] As a preferred solution of the present invention, a mounting groove is provided on the top of the bed, and the linear motor is arranged in the mounting groove.

[0013] The present invention also provides a linear motor grinding machine worktable, comprising a linear motor, a bed, an auxiliary slide and a working slide arranged above the auxiliary slide, the linear motor is arranged between the auxiliary slide and the bed, the linear motor comprises a primary and a secondary, the primary is fixed to the top of the bed, the secondary is fixedly connected to the bottom of the auxiliary slide, linear guide rails and auxiliary guide rails parallel to the linear guide rails are respectively provided on both sides of the top of the bed, a working slide is provided on the linear guide rail, an auxiliary slide is provided on the auxiliary guide rail, the working slide is fixedly connected to the working slide, the auxiliary slide is fixedly connected to the auxiliary slide, the working slide and the auxiliary slide are fixedly connected in the length direction of the linear guide, and the working slide and the auxiliary slide are slidably connected in the vertical direction.

[0014] The linear motor grinder worktable implemented by the present invention has the following beneficial effects compared with the prior art: since the working slide is fixedly connected to the working slide, the auxiliary slide is fixedly connected to the auxiliary slide, and the auxiliary slide is fixedly connected to the working slide in the length direction of the linear guide, when the secondary and primary of the linear motor cooperate to move along the length direction of the linear guide, the secondary drives the auxiliary slide to move, the auxiliary slide drives the auxiliary slide to move, and the auxiliary slide drives the working slide and the working slide to move, thereby realizing the smooth movement of the working slide; the vertical suction force generated between the primary and the secondary acts on the auxiliary slide, and then acts on the auxiliary slide. Since the working slide and the auxiliary slide are slidably connected in the vertical direction, the suction force between the primary and the secondary will not directly act on the working slide through the auxiliary slide, thereby avoiding the vibration of the working slide caused by the suction force of the primary and the secondary acting on the working slide, ensuring the smooth movement of the working slide and the grinding quality of the grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural diagram of Embodiment 1 of the present invention;

[0016] Figure 2 yes Figure 1 A local enlarged view of point A;

[0017] Figure 3 yes Figure 1 The structural diagram after removing the working slide;

[0018] Figure 4 yes Figure 3 A local enlarged view of point B;

[0019] Figure 5 yes Figure 1 A cross-sectional view of

[0020] Figure 6 This is a schematic diagram of the connection structure between the working slide and the auxiliary slide block of the second embodiment of the present invention;

[0021] Figure 7 It is a schematic diagram of the connection structure between the working slider, the auxiliary slider and the linear guide rail of the third embodiment of the present invention;

[0022] In the figure, 1, linear motor; 11, primary; 12, secondary; 2, bed; 21, linear guide; 22, working slider; 23, auxiliary slider; 24, auxiliary slide; 241, key block; 25, mounting groove; 26, auxiliary guide rail; 3, auxiliary slide; 31, keyway; 32, positioning boss; 4, working slide; 41, sliding groove; 5, vertical sliding pair; 51, slide rail; 52, slider. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of the present invention, it should be understood that the present invention adopts the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0025] like Figures 1 to 5 As shown, this is embodiment 1 of the present invention.

[0026] A linear motor grinding machine worktable comprises a linear motor 1, a bed 2, an auxiliary slide 3 and a working slide 4 arranged above the auxiliary slide 3, wherein the linear motor 1 is arranged between the auxiliary slide 3 and the bed 2, the auxiliary slide 3 is arranged above the bed 2, the linear motor 1 comprises a primary 11 and a secondary 12, the primary 11 is fixed to the top of the bed 2, the secondary 12 is fixedly connected to the bottom of the auxiliary slide 3, the secondary 12 can move along the length direction of the bed 2, linear guide rails 21 are respectively arranged on both sides of the top of the bed 2, a working slide 22 and an auxiliary slide 23 are arranged on the linear guide rails 21, the working slide 22 is fixedly connected to the working slide 4, the auxiliary slide 23 is fixedly connected to the auxiliary slide 3, the working slide 4 and the auxiliary slide 23 are fixedly connected in the length direction of the linear guide rails 21, and the working slide 4 and the auxiliary slide 23 are slidably connected in the vertical direction.

[0027] The working principle of this embodiment is as follows: since the working slide 22 is fixedly connected to the working slide 4, the auxiliary slide 23 is fixedly connected to the auxiliary slide 3, and the auxiliary slide 23 is fixedly connected to the working slide 4 in the length direction of the linear guide 21, when the secondary 12 of the linear motor 1 cooperates with the primary 11 to move along the length direction of the bed 2 (i.e., the length direction of the linear guide 21), the secondary 12 drives the auxiliary slide 3 to move, the auxiliary slide 3 drives the auxiliary slide 23 to move, and the auxiliary slide 3 drives the working slide 4 and the working slide 22 to move, thereby realizing the smooth movement of the working slide 4; the primary 11 The vertical suction force generated between the primary 11 and the secondary 12 acts on the auxiliary slide 3, and then acts on the auxiliary slider 23. Since the working slide 4 is suspended above the auxiliary slider 23, that is, the auxiliary slider 23 does not support the working slide 4, the working slide 4 and the auxiliary slider 23 are slidably connected in the vertical direction. Therefore, the suction force between the primary 11 and the secondary 12 will not directly act on the working slide 4 through the auxiliary slider 23, thereby avoiding the suction force of the primary 11 and the secondary 12 acting on the working slide 4 and causing vibration of the working slide 4, ensuring the smooth movement of the working slide 4 and the grinding quality of the grinder.

[0028] Exemplarily, there are gaps between the top surface of the auxiliary slider 23 and the top surface of the auxiliary slide 3 and the bottom surface of the working slide 4, respectively, to prevent the auxiliary slide 3 or the auxiliary slider 23 from transmitting force to the working slide 4 when it vibrates and jumps in the vertical direction due to the suction force of the primary 11 and the secondary 12, thereby affecting the working accuracy of the working slide 4.

[0029] Exemplarily, an auxiliary slide 24 is fixed to the top of the auxiliary slide 23, and the auxiliary slide 24 is fixedly connected to the auxiliary slide 3. A sliding groove 41 is provided at the bottom of the working slide 4, and the opening of the sliding groove 41 faces downward. The sliding groove 41 and the auxiliary slide 24 can slidably cooperate in the vertical direction. The two sides of the sliding groove 41 along the length direction of the bed are against the auxiliary slide 24. Through the cooperation of the auxiliary slide 24 and the sliding groove 41, the auxiliary slide 3 and the auxiliary slide 23 are fixedly connected in the length direction of the linear guide 21, and the auxiliary slide 23 and the working slide 4 are slidably connected in the vertical direction. There is a gap between the top surface of the auxiliary slide 24 and the inner bottom surface of the sliding groove 41 above it, and the auxiliary slide 24 does not support the working slide 4. When the auxiliary slide 3 vibrates and jumps in the vertical direction due to the suction force between the primary 11 and the secondary 12, due to the gap between the auxiliary slide 24 and the sliding groove 41, the auxiliary slide 24 will not directly act on the working slide 4. Without considering the friction between the auxiliary slide 24 and the sliding groove 41, the working slide 4 will not be affected by the suction force between the primary 11 and the secondary 12. If the friction force is considered, the friction coefficient between the auxiliary slide 24 and the sliding groove 41 is generally less than 0.1. Therefore, the force applied to the working slide 4 is only one tenth of the suction force between the primary 11 and the secondary 12, which will not affect the smooth movement of the working slide 4, avoid vibration of the working slide 4 due to the force, reduce the risk of grinding vibration marks, and ensure the grinding quality of the grinder.

[0030] Exemplarily, the auxiliary slide 3 is arranged between the linear guide rails 21 on both sides, a key block 241 is provided on the side of the auxiliary slide plate 24 close to the auxiliary slide 3, and a key slot 31 cooperating with the key block 241 is provided on the top of the auxiliary slide 3. Through the cooperation between the key block 241 and the key slot 31, the auxiliary slider 23 and the auxiliary slide 3 are fixedly connected in the length direction of the linear guide rail 21.

[0031] Exemplarily, a plurality of positioning bosses 32 are provided on the top of both sides of the auxiliary slide 3 along the length direction of the bed 2, and a key slot 31 is formed between adjacent positioning bosses 32 along the length direction of the bed 2, that is, the opening of the key slot 31 faces upward. In this embodiment, the key slot 31 and the key block 241 are slidably connected in the vertical direction, thereby reducing the effect of the suction force between the primary 11 and the secondary 12 on the auxiliary slide 23.

[0032] Exemplarily, the side of the sliding groove 41 away from the auxiliary slide 3 is open. Since the key block 241 cooperates with the key groove 31, the other side of the sliding groove 41 is also open. The auxiliary slide 24 and the sliding groove 41 can be slidably cooperated along the width direction of the bed 2. When the auxiliary slide 24 is respectively in a separable state from the auxiliary slide 23 and the auxiliary slide 3 (relevant connecting parts are removed), the auxiliary slide 24 can be pulled out from the sliding groove 41 along the width direction of the bed 2, and then the entire auxiliary slide 3 can be removed from the bed 2 together with the secondary 12 of the linear motor 1 for easy maintenance.

[0033] In order to ensure that the auxiliary slide 3 is firmly connected to the auxiliary slider 23, illustratively, a first connecting member (such as a bolt, a pin, etc.) is provided on the side of the auxiliary slide 24 away from the auxiliary slide 3, and the auxiliary slide 24 is fixedly connected to the auxiliary slide 3 through the first connecting member, and the auxiliary slide 24 is fixedly connected to the top of the auxiliary slider 23 through the second connecting member. The second connecting member passes through the working slide 4, which is easy to disassemble and assemble, so that the key slot 31 and the key block 241 are also fixedly connected in the vertical direction. The auxiliary slide 3 and the auxiliary slider 23 are connected as a whole to avoid jumping due to looseness. The first connecting member is provided on the side of the auxiliary slide 24, and even if the first connection is loose, it will not affect the operation of the working slide 4.

[0034] Exemplarily, a mounting groove 25 is provided on the top of the bed 2, and the linear motor 1 is disposed in the mounting groove 25, that is, the primary 11 and the secondary 12 of the linear motor 1 are both disposed in the mounting groove 25, and the bottom of the auxiliary slide 3 is also disposed in the mounting groove 25, so that the overall structure of the grinder is compact, thereby reducing the height of the grinder.

[0035] Exemplarily, a plurality of working slide blocks 22 and a plurality of auxiliary slide blocks 23 are provided, and the plurality of working slide blocks 22 and the plurality of auxiliary slide blocks 23 work together to enable the working slide table 4 to move stably and with high precision.

[0036] Exemplarily, the linear guide 21 is a ball linear guide 21 with a single arc structure, and the allowable error range of straightness and parallelism is relatively large. While ensuring that the working slide 4 has reasonable rigidity, it reduces the influence of the deformation of the bed 2 and the installation error of the linear guide 21 on the operation of the working slide 4.

[0037] like Figure 7 As shown, this is the second embodiment of the present invention.

[0038] What is different from the first embodiment is that the working slide 4 is connected to the auxiliary slider 23 through a vertical sliding pair 5. The vertical sliding pair 5 includes a vertically arranged slide rail 51 and a slider 52 slidably connected to the slide rail 51. The slide rail 51 is fixedly connected to the auxiliary slider 23, and the slider 52 is fixedly connected to the working slide 4. The sliding connection between the slide rail 51 and the slider 52 realizes the slidable connection between the working slide 4 and the auxiliary slider 23 in the vertical direction and the fixed connection in the length direction of the linear guide. It should be noted that the specific structure of the vertical sliding pair in this embodiment is an example scheme, and other sliding pairs that can realize the above-mentioned connection relationship are also within the protection scope of the present invention.

[0039] like Figure 7 As shown, this is embodiment 3 of the present invention.

[0040] A linear motor grinding machine worktable comprises a linear motor 1, a bed 2, an auxiliary slide 3 and a working slide 4 arranged above the auxiliary slide 3, wherein the linear motor 1 is arranged between the auxiliary slide 3 and the bed 2, and the linear motor 1 comprises a primary 11 and a secondary 12, wherein the primary 11 is fixed to the top of the bed 2, and the secondary 12 is fixedly connected to the bottom of the auxiliary slide 3, and linear guide rails 21 and auxiliary guide rails 26 parallel to the linear guide rails 21 are respectively arranged on both sides of the top of the bed 2, a working slide 22 is arranged on the linear guide rail 21, and an auxiliary slide 23 is arranged on the auxiliary guide rail 26, the working slide 22 is fixedly connected to the working slide 4, the auxiliary slide 23 is fixedly connected to the auxiliary slide 3, the working slide 4 and the auxiliary slide 23 are fixedly connected in the length direction of the linear guide rail 21, and the working slide 4 and the auxiliary slide 23 are slidably connected in the vertical direction.

[0041] This embodiment is different from the first embodiment in that a linear guide rail 21 and an auxiliary guide rail 26 are provided in this embodiment, the working slider 22 and the linear guide rail 21 form a guide pair, the auxiliary slider 23 and the auxiliary guide rail 26 form a guide pair, and the auxiliary slider 23 does not need to be provided in the same guide rail as the working slider 22, so maintenance is more convenient.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A linear motor grinding machine workbench, characterized in that: It includes a linear motor, a bed, an auxiliary slide and a working slide arranged above the auxiliary slide, the linear motor is arranged between the auxiliary slide and the bed, the linear motor includes a primary and a secondary, the primary is fixed to the top of the bed, the secondary is fixedly connected to the bottom of the auxiliary slide, linear guides are respectively provided on both sides of the top of the bed, a working slider and an auxiliary slider are provided on the linear guides, the working slider is fixedly connected to the working slide, the auxiliary slider is fixedly connected to the auxiliary slide, there are gaps between the top surfaces of the auxiliary slider and the top surfaces of the auxiliary slide and the bottom surfaces of the working slide respectively, and the working slide and the auxiliary slider are slidably connected in the vertical direction; An auxiliary slide is fixed on the top of the auxiliary slide, the auxiliary slide is connected to the auxiliary slide, the bottom of the working slide is provided with a sliding groove that can slide with the auxiliary slide in the vertical direction, and there is a gap between the top surface of the auxiliary slide and the inner bottom surface of the sliding groove; Alternatively, the working slide is connected to the auxiliary slide via a vertical sliding pair, the vertical sliding pair comprises a vertically arranged slide rail and a slide block slidably connected to the slide rail, the slide rail is fixedly connected to the auxiliary slide block, and the slide block is fixedly connected to the working slide.

2. The linear motor grinding machine worktable according to claim 1, characterized in that: The auxiliary slide is arranged between the linear guide rails on both sides, a key block is arranged on one side of the auxiliary slide plate close to the auxiliary slide, and a key slot cooperating with the key block is arranged on the top of the auxiliary slide.

3. The linear motor grinding machine worktable according to claim 2, characterized in that: A plurality of positioning bosses arranged along the length direction of the bed are provided on the tops of both sides of the auxiliary slide, and the key slots are formed between the adjacent positioning bosses along the length direction of the bed.

4. The linear motor grinding machine worktable according to claim 1, characterized in that: The side of the sliding groove away from the auxiliary slide is an opening, and the auxiliary slide plate and the sliding groove can be slidably matched along the width direction of the bed.

5. The linear motor grinding machine worktable according to claim 4, characterized in that: A first connecting piece is provided on a side of the auxiliary slide away from the auxiliary slide, and the auxiliary slide is fixedly connected to the auxiliary slide via the first connecting piece. The auxiliary slide is fixedly connected to the top of the auxiliary slider via a second connecting piece, and the second connecting piece passes through the working slide.

6. The linear motor grinding machine worktable according to claim 1, characterized in that: A mounting groove is arranged on the top of the bed, and the linear motor is arranged in the mounting groove.

7. A linear motor grinding machine workbench, characterized in that: It comprises a linear motor, a bed, an auxiliary slide and a working slide arranged above the auxiliary slide, the linear motor is arranged between the auxiliary slide and the bed, the linear motor comprises a primary and a secondary, the primary is fixed to the top of the bed, the secondary is fixedly connected to the bottom of the auxiliary slide, a linear guide rail and an auxiliary guide rail parallel to the linear guide rail are respectively arranged on both sides of the top of the bed, a working slide rail is arranged on the linear guide rail, an auxiliary slide rail is arranged on the auxiliary guide rail, the working slide rail is fixedly connected to the working slide, the auxiliary slide rail is fixedly connected to the auxiliary slide, and the working slide and the auxiliary slide are slidably connected in the vertical direction; An auxiliary slide is fixed on the top of the auxiliary slide, the auxiliary slide is connected to the auxiliary slide, the bottom of the working slide is provided with a sliding groove that can slide with the auxiliary slide in the vertical direction, and there is a gap between the top surface of the auxiliary slide and the inner bottom surface of the sliding groove; Alternatively, the working slide is connected to the auxiliary slide via a vertical sliding pair, the vertical sliding pair comprises a vertically arranged slide rail and a slide block slidably connected to the slide rail, the slide rail is fixedly connected to the auxiliary slide block, and the slide block is fixedly connected to the working slide.

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