Grinding machine with improved structure

Abstract

The invention provides a grinding machine with an improved structure, and belongs to the technical field of machinery. The problem that an existing grinding machine is complex in structure is solved. The grinding machine of the improved structure comprises a machine body, a spindle box and a grinding wheel assembly, the spindle box comprises a spindle, the grinding wheel assembly comprises a supporting plate, a round pipe body and a grinding wheel shaft, a water inlet base with a water inlet channel is fixed to the spindle box, the two ends of the round pipe body are an open end and a closed end respectively, and the water inlet channel comprises a water outlet hole allowing the open end to be inserted. A driving assembly used for driving the supporting plate to horizontally move left and right is arranged on the machine tool body, when the supporting plate moves rightwards, the circular pipe body and the grinding wheel shaft can be aligned with the water outlet hole and the main shaft correspondingly, a pipe clamp and a cutter clamp which are vertically arranged in parallel are fixed to the supporting plate, and a circular-arc-shaped pipe groove with a rightward groove opening is formed in the pipe clamp. The cutter holder is provided with an arc-shaped cutter groove with a rightward groove opening, and the round pipe body and the grinding wheel shaft are clamped into the pipe groove and the cutter groove respectively. The grinding machine with the improved structure is simple in structure.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a grinding machine, in particular to a grinding machine with an improved structure. Background Art

[0002] A grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece, and most grinders use high-speed rotating grinding wheels for grinding. The accuracy of the grinding wheel will change significantly after a long period of work, and the grinding wheel needs to be removed for correction. In order not to delay the grinding progress, a new grinding wheel is usually replaced first, and the old grinding wheel is corrected separately.

[0003] Regarding the replacement of grinding wheels, the applicant has previously proposed a device for automatically replacing grinding wheels, specifically a grinding machine (application number: 202111614395.0) including a bed, a grinding wheel assembly and a spindle box, the spindle box including a chassis slidably arranged on the bed, a spindle seat slidably arranged on the chassis up and down, and a spindle horizontally arranged on the spindle seat, characterized in that a support is provided on the left side of the spindle, a turntable and a motor for driving the turntable to rotate around its own axis are provided on the support, and the turntable is vertically arranged and located on the front side of the support; a driving structure for driving the support to translate left and right to make the turntable approach or move away from the spindle is provided on the bed; there are multiple grinding wheel assemblies and they are evenly distributed circumferentially on the turntable, the grinding wheel assembly includes a horizontally arranged grinding wheel shaft, a support plate fixed on the turntable, and a tool clamp fixed on the support plate, the axes of the grinding wheel shaft and the spindle are parallel, a grinding wheel is installed at one end of the grinding wheel shaft, the tool clamp has a tool groove for the other end of the grinding wheel shaft to be clamped, and the rotation of the turntable can align the grinding wheel shaft with the spindle one by one.

[0004] In the above-mentioned grinder, the spindle needs to move in four directions, namely, forward, backward, up and down, to achieve the replacement of the grinding wheel assembly. The movement of the spindle needs to be equipped with a corresponding drive source and a guide rail slider structure, which makes the overall structure more complicated and affects the stable operation of the grinder. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems in the prior art and to propose a grinding machine with an improved structure, so as to solve the technical problem of how to simplify the structure.

[0006] The purpose of the present invention can be achieved through the following technical solutions: a grinding machine with an improved structure, comprising a bed, a spindle box slidably arranged on the bed, and a grinding wheel assembly arranged on the left side of the spindle box, the spindle box comprising a spindle, the grinding wheel assembly comprising a support plate and a circular tube body and a grinding wheel shaft arranged in parallel up and down, a water inlet seat with a water inlet channel is fixed on the spindle box, the two ends of the circular tube body are respectively an open end and a closed end, a cooling water pipe for grinding cooling is arranged on the side of the circular tube body, the water inlet channel comprises a water outlet hole for inserting the open end, a driving assembly for driving the support plate to translate left and right is arranged on the bed, and when the support plate moves right, the circular tube body and the grinding wheel shaft can be respectively moved left and right The water outlet and the main shaft are aligned, and a locking structure for locking the circular tube body is provided on the water inlet seat, characterized in that a tube clamp and a knife clamp arranged in parallel up and down are fixed on the support plate, the tube clamp has a tube groove in a circular arc shape with a notch arranged to the right, the knife clamp has a knife groove in a circular arc shape with a notch arranged to the right, and the circular tube body and the grinding wheel shaft are respectively inserted into the tube groove and the knife groove; a limiting structure 1 for limiting the axial movement of the circular tube body is provided between the tube groove and the circular tube body, and a limiting structure 2 for limiting the axial movement of the grinding wheel shaft is provided between the knife groove and the grinding wheel shaft, and the leftward movement of the support plate can simultaneously release the limitation of the limiting structure on the circular tube body and the limiting structure 2 on the grinding wheel shaft.

[0007] The slots of the tube clamp and the tool clamp are both set to the right, so that the insertion and extraction direction of the tube groove and the grinding wheel shaft is the same as the movement direction of the support plate. In this way, the grinding wheel assembly can be replaced by simply moving the spindle box back and forth, thereby simplifying the movement trajectory of the spindle box. This not only improves the operating stability of the grinder, but also simplifies the structure and reduces costs.

[0008] In the above-mentioned improved structure grinding machine, the above-mentioned limiting structure 1 includes an annular groove opened on the outer wall of the circular tube body and an arc segment coaxially formed on the inner wall of the tube groove. The shape and size of the arc segment match the annular groove, and the arc segment is inserted into the above-mentioned annular groove.

[0009] In the above-mentioned improved structure grinder, a pluggable connection structure is provided between the support plate and the circular tube body, and the connection structure is used to limit the circumferential rotation of the circular tube body, and the plug-in and pull-out direction of the circular tube body is consistent with the movement direction of the support plate. The plug-in connection structure is used to limit the circumferential rotation of the circular tube body without affecting the replacement of the grinding wheel assembly, so as to ensure that the circular tube body does not rotate when the grinding wheel assembly is replaced, so that the cold water pipe is always in the correct water spraying position, and the working stability of the grinder is improved.

[0010] In the above-mentioned improved structure grinding machine, the connection structure includes a straight hole opened on the outer wall of the circular tube, the straight hole is between the opening end and the cooling water pipe, and the axis of the straight hole extends left and right; a base is fixed on the support plate, and a limiting column matching the straight hole is formed on the base, and the limiting column is inserted into the straight hole. The limiting column and the straight hole are used to limit the circumferential rotation of the circular tube, which has the advantages of simple structure and stable operation.

[0011] As another solution, in the above-mentioned improved structure grinding machine, the connection structure includes a convex column formed on the circular arc segment and a recess formed on the bottom wall of the annular groove, and the convex column is inserted into the recess. The above-mentioned design not only realizes the circumferential limit of the circular tube body, but also hides the connection structure between the circular tube body and the tube clamp, and the overall structure is more simple and compact.

[0012] In the above-mentioned improved structure grinding machine, the locking structure includes a driving member, a mounting hole penetrating the water inlet seat and a positioning block slidably arranged in the mounting hole. The axes of the mounting hole and the water outlet hole are arranged vertically. The driving member is used to drive the positioning block to reciprocate along the axial direction of the mounting hole. A positioning groove matching the positioning block and for inserting one end of the positioning block is provided on the outer wall of the circular tube.

[0013] In the above-mentioned improved structure grinder, the positioning groove is annular and coaxial with the circular tube, and the end of the positioning block close to the circular tube is arc-shaped matching the positioning groove, so as to increase the contact area between the positioning block and the circular tube and improve the strength and stability of the locking of the circular tube.

[0014] In the above-mentioned improved structure grinder, a connecting hole is horizontally penetrated on the water inlet seat, a positioning pin is horizontally fixed in the connecting hole, and a strip groove matching the positioning pin is opened on the outer wall of the circular tube body. The length of the strip groove extends along the axial direction of the circular tube body, and the end of the strip groove close to the open end is open. One end of the positioning pin can be inserted into the strip groove to limit the rotation of the circular tube body.

[0015] Compared with the prior art, the grinding machine with the improved structure has the following advantages: 1. The notches of the tube clamp and the tool clamp are set to the right, so that the insertion and extraction direction of the tube groove and the grinding wheel shaft is the same as the moving direction of the support plate. In this way, the grinding wheel assembly can be replaced by simply moving the spindle box back and forth, which can not only improve the running stability of the grinder, but also simplify the structure and reduce costs.

[0016] 2. With the cooperation of the connection structure, the positioning pin and the strip groove, the rotation of the round tube body is restricted during the replacement of the grinding wheel assembly and the entire operation of the grinder, so that the cold water pipe is always in the correct water spraying position, thereby improving the working stability of the grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the grinding machine with the improved structure.

[0018] Figure 2 It is a three-dimensional schematic diagram of the connection between the grinding wheel assembly and the spindle box.

[0019] Figure 3 It is a cross-sectional schematic diagram of the connection between the grinding wheel assembly and the spindle box.

[0020] Figure 4It is a connection diagram of the circular tube body and the water inlet seat.

[0021] Figure 5 yes Figure 4 A magnified schematic diagram of center A.

[0022] In the figure, 1, bed; 2, spindle box; 2a, spindle; 3, support plate; 4, circular tube; 4a, positioning groove; 4b, strip groove; 5, grinding wheel shaft; 6, cooling water pipe; 7, grinding wheel; 8, water inlet seat; 8a, water outlet hole; 9, sealing ring; 10, pipe clamp; 10a, arc segment; 11, tool clamp; 12, base; 12a, limit column; 13, driving member; 14, positioning block; 15, positioning pin; 16, turntable. DETAILED DESCRIPTION

[0023] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments. Embodiment 1

[0024] like Figure 1 As shown, the grinding machine of the improved structure includes a bed 1, a spindle box 2 slidably arranged on the bed 1, and a grinding wheel assembly arranged on the left side of the spindle box 2. Among them, the spindle box 2 is an existing structure, including a horizontally arranged spindle 2a, and the axis of the spindle 2a extends forward and backward. In the actual product, the spindle box 2 is slidably arranged on the bed 1 through a guide rail slider structure, and is driven to move automatically forward and backward by a motor screw transmission mechanism.

[0025] Specifically, like Figure 2 and Figure 3 As shown, the grinding wheel assembly includes a support plate 3, a circular tube body 4 and a grinding wheel shaft 5. The circular tube body 4 and the grinding wheel shaft 5 are both arranged horizontally, and the axes of the circular tube body 4 and the grinding wheel shaft 5 extend forward and backward; the circular tube body 4 and the grinding wheel shaft 5 are arranged side by side up and down; the front and rear ends of the circular tube body 4 are respectively a closed end and an open end, and a cooling water pipe 6 for grinding cooling is fixedly arranged on the side of the circular tube body 4, and there are multiple cooling water pipes 6 that are all connected to the inner cavity of the circular tube body 4; a grinding wheel 7 is installed at the front end of the grinding wheel shaft 5.

[0026] A water inlet seat 8 with a water inlet channel is fixed on the spindle box 2, and the water inlet channel includes a water inlet hole and a water outlet hole 8a for inserting the open end of the circular tube body 4. In the actual product, the water outlet hole 8a is in the shape of a straight strip, and the water outlet hole 8a is arranged horizontally, and the axis of the water outlet hole 8a extends forward and backward; an annular limiting groove is provided on the inner wall of the water outlet hole 8a, and a sealing ring 9 is provided in the limiting groove to form a seal with the inserted open end so that the coolant discharged through the water inlet hole can completely enter the circular tube body 4. A driving component for driving the support plate 3 to translate left and right is provided on the bed 1, and when the support plate 3 moves to the right, the circular tube body 4 and the grinding wheel shaft 5 can be aligned with the water outlet hole 8a and the spindle 2a respectively. A locking structure for locking the circular tube body 4 is provided on the water inlet seat 8.

[0027] like Figure 2 and Figure 3 As shown, a pipe clamp 10 and a knife clamp 11 are fixed on the support plate 3 and arranged in parallel from top to bottom. Both the pipe clamp 10 and the knife clamp 11 are existing products and can be obtained on the market. The pipe clamp 10 has a pipe groove in the shape of an arc and the notch is arranged to the right; the knife clamp 11 has a knife groove in the shape of an arc and the notch is arranged to the right, and the circular tube body 4 and the grinding wheel shaft 5 are respectively inserted into the pipe groove and the knife groove. A limiting structure 1 for limiting the axial movement of the circular tube body 4 is provided between the pipe groove and the circular tube body 4, and a limiting structure 2 for limiting the axial movement of the grinding wheel shaft 5 is provided between the knife groove and the grinding wheel shaft 5, and the leftward movement of the support plate 3 can simultaneously release the limitation of the limiting structure on the circular tube body 4 and the limitation of the limiting structure 2 on the grinding wheel shaft 5.

[0028] The notches of the tube clamp 10 and the tool clamp 11 are both set to the right, so that the insertion and removal direction of the tube groove and the grinding wheel shaft 5 is the same as the movement direction of the support plate 3. In this way, the grinding wheel assembly can be replaced by simply moving the spindle 2a box 2 back and forth, thereby simplifying the movement trajectory of the spindle 2a box 2. This not only improves the operating stability of the grinder, but also simplifies the structure and reduces costs.

[0029] In this embodiment, The first limiting structure includes an annular groove formed on the outer wall of the circular tube body 4 and an arc segment 10a coaxially formed on the inner wall of the tube groove. The shape and size of the arc segment 10a match the annular groove, and the arc segment 10a is inserted into the annular groove. Preferably, the axial cross-sections of the arc segment 10a and the annular groove are mutually matching trapezoids to enhance the axial limiting effect.

[0030] The structure of the second limiting structure is basically the same as that of the first limiting structure, and will not be described in detail here.

[0031] Further explanation, a pluggable connection structure is provided between the support plate 3 and the circular tube 4, and the connection structure is used to limit the circumferential rotation of the circular tube 4, and the plugging and unplugging direction of the circular tube 4 is consistent with the movement direction of the support plate 3. The pluggable connection structure is used to limit the circumferential rotation of the circular tube 4 without affecting the replacement of the grinding wheel assembly, so as to ensure that the circular tube 4 does not rotate when the grinding wheel assembly is replaced, so that the cold water pipe is always in the correct water spraying position, and the working stability of the grinder is improved.

[0032] The connection structure is as follows: Figure 2 As shown, it includes a straight hole opened on the outer wall of the circular tube body 4, the straight hole is between the open end and the cooling water pipe 6, and the axis of the straight hole extends left and right; a base 12 is fixed on the support plate 3, and a limiting column 12a matching the straight hole is formed on the base 12, and the limiting column 12a is inserted into the straight hole. The limiting column 12a and the straight hole are used to limit the circumferential rotation of the circular tube body 4, which has the advantages of simple structure and stable operation.

[0033] like Figure 4 and Figure 5 As shown, the locking structure includes a driving member 13, a mounting hole penetrating the water inlet seat 8, and a positioning block 14 slidably arranged in the mounting hole. The axes of the mounting hole and the water outlet hole 8a are vertically arranged, and the mounting hole is located in front of the sealing ring 9; the driving member 13 is used to drive the positioning block 14 to reciprocate along the axial direction of the mounting hole, and a positioning groove 4a matching the positioning block 14 and for inserting one end of the positioning block 14 is provided on the outer wall of the circular tube 4. Among them, the type of the driving member 13 is a cylinder or an oil cylinder. Further explanation, the positioning groove 4a is annular and coaxial with the circular tube 4, and the end of the positioning block 14 close to the circular tube 4 is in an arc shape matching the positioning groove 4a, so as to increase the contact area between the positioning block 14 and the circular tube 4, and improve the strength and stability of the circular tube 4 being locked.

[0034] like Figure 5 As shown, the water inlet seat 8 is also horizontally penetrated with a connecting hole, and the connecting hole is on the front side of the sealing ring 9. A positioning pin 15 is horizontally fixed in the connecting hole, and a strip groove 4b matching the positioning pin 15 is provided on the outer wall of the circular tube 4. The length of the strip groove 4b extends along the axial direction of the circular tube 4, and the end of the strip groove 4b close to the open end is open. One end of the positioning pin 15 can be inserted into the strip groove 4b to limit the rotation of the circular tube 4.

[0035] With the cooperation of the connection structure, the positioning pin 15 and the strip groove 4b, the rotation of the circular tube 4 is restricted during the replacement of the grinding wheel assembly and the entire operation of the grinder, so that the cold water pipe is always in the correct water spraying position, thereby improving the working stability of the grinder.

[0036] The driving assembly includes a support that slides left and right on the bed 1, a motor installed on the support, a turntable 16 driven by the motor, and a cylinder or oil cylinder for driving the support to move. In the actual product, there are multiple grinding wheel assemblies that are evenly distributed on the turntable 16, and the support plate 3 of each grinding wheel assembly is fixed on the turntable 16. The turntable 16 includes a discharge station. The grinding wheel assemblies enter the discharge station in sequence under the operation of the turntable 16, and the grinding wheel assembly at the discharge station is aligned with the main shaft 2a and the water outlet 8a through the sliding of the support, so as to enhance the degree of automation in the replacement process of the grinding wheel assembly and make it more convenient to use. Embodiment 2

[0037] The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that the connection structure includes a protrusion formed on the arc segment 10a and a recess formed on the bottom wall of the annular groove, and the protrusion is inserted into the recess. The above design not only realizes the circumferential limit of the circular tube 4, but also hides the connection structure between the circular tube 4 and the pipe clamp 10, making the overall structure more simple and compact. Embodiment 3

[0038] The structure and principle of the third embodiment are basically the same as those of the first embodiment, except that the limiting structure 1 includes a protrusion formed on the inner wall of the tube groove and a bayonet provided on the bottom wall of the annular groove, and the protrusion is inserted into the bayonet.

[0039] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A grinding machine with an improved structure, comprising a bed (1), a spindle box (2) slidably arranged on the bed (1) and a grinding wheel assembly arranged on the left side of the spindle box (2), the spindle box (2) comprising a spindle (2a), the grinding wheel assembly comprising a support plate (3) and a circular tube (4) and a grinding wheel shaft (5) arranged in parallel up and down, a water inlet seat (8) having a water inlet channel fixed on the spindle box (2), the two ends of the circular tube (4) are respectively an open end and a closed end, a cooling water pipe (6) for grinding cooling is arranged on the side of the circular tube (4), the water inlet channel comprises a water outlet hole (8a) for inserting the open end, a driving assembly for driving the support plate (3) to translate left and right is provided on the bed (1), and when the support plate (3) moves rightward, the circular tube (4) and the grinding wheel shaft (5) can be aligned with the water outlet hole (8a) and the spindle (2a) respectively, and a locking structure for locking the circular tube (4) is provided on the water inlet seat (8), characterized in that: A tube clamp (10) and a knife clamp (11) are fixed to the support plate (3) and are arranged in parallel up and down. The tube clamp (10) has a tube groove in the shape of an arc and the notch is arranged to the right. The knife clamp (11) has a knife groove in the shape of an arc and the notch is arranged to the right. The circular tube body (4) and the grinding wheel shaft (5) are respectively inserted into the tube groove and the knife groove. A limiting structure 1 for limiting the axial movement of the circular tube body (4) is provided between the tube groove and the circular tube body (4). A limiting structure 2 for limiting the axial movement of the grinding wheel shaft (5) is provided between the knife groove and the grinding wheel shaft (5). When the support plate (3) moves leftward, the limiting structures on the circular tube body (4) and the limiting structures on the grinding wheel shaft (5) can be released simultaneously.

2. The grinding machine with improved structure according to claim 1, characterized in that: The above-mentioned limiting structure 1 comprises an annular groove formed on the outer wall of the circular tube body (4) and an arc segment (10a) coaxially formed on the inner wall of the tube groove. The shape and size of the arc segment (10a) match the annular groove, and the arc segment (10a) is inserted into the annular groove.

3. The grinding machine with improved structure according to claim 2, characterized in that: A pluggable connection structure is provided between the support plate (3) and the circular tube (4), the connection structure being used to limit the circumferential rotation of the circular tube (4), and the plugging and unplugging direction of the circular tube (4) is consistent with the movement direction of the support plate (3).

4. The grinding machine with improved structure according to claim 3, characterized in that: The connection structure comprises a straight hole formed on the outer wall of the circular tube (4), the straight hole being between the open end and the cooling water pipe (6), and the axis of the straight hole extending left and right; a base (12) is fixed on the support plate (3), a limiting column (12a) matching the straight hole is formed on the base (12), and the limiting column (12a) is inserted into the straight hole.

5. The grinding machine with improved structure according to claim 4, characterized in that: The connection structure comprises a convex column formed on the circular arc segment (10a) and a recess provided on the bottom wall of the annular groove, and the convex column is inserted into the recess.

6. The grinding machine with improved structure according to claim 3, characterized in that: The locking structure comprises a driving member (13), a mounting hole penetrating the water inlet seat (8), and a positioning block (14) slidably disposed in the mounting hole, wherein the axes of the mounting hole and the water outlet hole (8a) are disposed perpendicularly, the driving member (13) is used to drive the positioning block (14) to reciprocate along the axis of the mounting hole, and a positioning groove (4a) matching the positioning block (14) and for inserting one end of the positioning block (14) is provided on the outer wall of the circular tube body (4).

7. The grinding machine with improved structure according to claim 6, characterized in that: The positioning groove (4a) is annular and coaxial with the circular tube (4); the end of the positioning block (14) close to the circular tube (4) is in an arc shape matching the positioning groove (4a).

8. The grinding machine with improved structure according to claim 7, characterized in that: The water inlet seat (8) is also provided with a connecting hole extending horizontally therethrough, a positioning pin (15) being fixed horizontally therein, and a strip groove (4b) matching the positioning pin (15) is provided on the outer wall of the circular tube body (4), the length of the strip groove (4b) extending along the axial direction of the circular tube body (4), and an end of the strip groove (4b) close to the opening end is open, and one end of the positioning pin (15) can be inserted into the strip groove (4b).

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