CN112792659A

CN112792659A - Polishing machine tool

Info

Publication number: CN112792659A
Application number: CN202110150420.8A
Authority: CN
Inventors: 刘正清; 李小文; 黎传钊
Original assignee: Shenzhen Haicheng Equipment Technology Co ltd
Current assignee: Shenzhen Haicheng Equipment Technology Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-05-14

Abstract

The invention discloses a polishing machine tool, which is used for polishing a workpiece and comprises: a base station provided with a portal frame; an X-axis driving part mounted to the gantry; a Y-axis driving part which is arranged on the base and is positioned below the portal frame; a polishing device mounted on the X-axis drive unit, the polishing device including: the polishing device comprises a Z-axis driving part, a rotary driving part and a polishing part, wherein the Z-axis driving part is mounted on the X-axis driving part, the rotary driving part is mounted on the Z-axis driving part, the polishing part is mounted on the rotary driving part and driven by the rotary driving part to rotate, and the polishing part comprises a plurality of polishing main shafts which are distributed at intervals along the driving direction of the rotary driving part; and the workbench is carried on the Y-axis driving part and used for clamping a workpiece to be polished. According to the polishing machine tool disclosed by the invention, different polishing processes can be finished on a workpiece, and the structure is compact.

Description

Polishing machine tool

Technical Field

The invention relates to the technical field of machine tool equipment, in particular to a polishing machine tool.

Background

In some die casting polishing processes, a polishing machine is typically used. In the known die casting polishing process, in order to carry out different polishing processes, a polishing machine is usually provided with multiple stations, and independent polishing devices are respectively arranged beside each station. In addition, the polishing machine tool is also provided with a turntable on which a plurality of workpieces are loaded, and the polishing machine tool drives the turntable to rotate so that the workpieces are transferred to each polishing station, thereby performing different polishing processes on the workpieces.

Although the polishing machine tool can complete a plurality of different polishing processes, the polishing machine tool also has the technical problems of more components and large occupied space of equipment.

Disclosure of Invention

The present invention is directed to solving one of the problems of the prior art. Therefore, the invention provides a polishing machine tool which can finish different polishing processes and has a compact structure.

According to an embodiment of the invention, a polishing machine for polishing a workpiece includes: a base station provided with a portal frame; an X-axis driving part mounted to the gantry; a Y-axis driving part which is arranged on the base and is positioned below the portal frame; a polishing device mounted on the X-axis drive unit, the polishing device including: the polishing device comprises a Z-axis driving part, a rotary driving part and a polishing part, wherein the Z-axis driving part is mounted on the X-axis driving part, the rotary driving part is mounted on the Z-axis driving part, the polishing part is mounted on the rotary driving part and driven by the rotary driving part to rotate, and the polishing part comprises a plurality of polishing main shafts which are distributed at intervals along the driving direction of the rotary driving part; and the workbench is carried on the Y-axis driving part and used for clamping a workpiece to be polished.

The polishing machine tool has at least the following beneficial effects: because the polishing device is provided with the plurality of polishing main shafts, different polishing main shafts can be switched according to different polishing processes, different polishing processes can be completed on workpieces, and the structure is compact.

In some embodiments, the Y-axis driving unit includes a plurality of Y-axis driving units spaced apart from each other in the X-axis direction, and each of the Y-axis driving units carries one of the stages.

In some embodiments, the rotary drive section comprises: a rotary drive motor; an index plate rotated by the rotation driving motor, the polishing portion being mounted to the index plate.

In some embodiments, the indexing disk is a three-division index disk, the polishing spindles include a cutting polishing spindle, a floating rotary polishing spindle, and a reciprocating filing polishing spindle, and the cutting polishing spindle, the floating rotary polishing spindle, and the reciprocating filing polishing spindle are uniformly distributed in a driving direction of the rotary driving motor.

In some embodiments, the polishing apparatus further comprises a dust-proof portion attached to the base, a housing chamber is formed between the dust-proof portion and the base, and the X-axis driving portion, the Y-axis driving portion, the polishing device, and the table are respectively housed in the housing chamber.

In some embodiments, the dust-proof portion includes: a dust cover attached to the base, the dust cover having a first opening, a first guide portion extending in the X-axis direction being provided above the first opening, and a second guide portion extending in the X-axis direction being provided below the first opening; a sliding door part mounted to the first guide part and slidable along the first and second guide parts such that the first opening part is opened or closed.

In some embodiments, a first dust cover is further included, the first dust cover covering the Z-axis drive and the rotational drive.

In some embodiments, two sides of the polishing device along the X-axis direction are respectively provided with a first telescopic cover; one end of the first telescopic cover is connected to the dustproof portion respectively, the other end of the first telescopic cover is connected to the polishing device respectively, and a first space in the accommodating cavity is isolated relative to a second space, wherein the first space is a space in the accommodating cavity for accommodating the X-axis driving portion, and the second space is a space in the accommodating cavity for accommodating the polishing device and the workbench.

In some embodiments, two sides of the polishing device along the X-axis direction are respectively provided with a second telescopic cover; one end of the second telescopic hood is connected to the portal frame, the other end of the second telescopic hood is connected to the polishing device, and the second telescopic hood covers a part of the X-axis driving part.

In some embodiments, two sides of the workbench along the Y-axis direction are respectively provided with a third telescopic cover; one end of the third telescopic cover is connected to the workbench, and the other end of the third telescopic cover is fixed and covers a part of the Y-axis driving part.

Drawings

Fig. 1 is a perspective view of one embodiment of the polishing machine of the present invention.

Fig. 2 is a perspective view of the polishing apparatus of fig. 1.

Fig. 3 is a side view of the polishing apparatus of fig. 1.

Fig. 4 is a perspective view of the polishing apparatus of fig. 2 with the polishing section removed.

FIG. 5 is a perspective view of one embodiment of a polishing machine equipped with a dust guard.

Fig. 6 is a side view of the polishing machine of fig. 5.

Fig. 7 is a partial sectional view taken along a-a in fig. 5.

Fig. 8 is a perspective view illustrating the installation of the first stretch cover of fig. 6.

Fig. 9 is a side view showing the installation of the first bellows of fig. 6.

Fig. 10 is a front view of the second telescoping shield of fig. 9.

Fig. 11 is a perspective view showing the attachment of the first dust cover and the second dust cover.

Fig. 12 is a perspective view showing the installation of the third dust cover.

Fig. 13 is a front view of the third cowling shown in fig. 8.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the following description, the same or similar technical features are denoted by the same reference numerals and are distinguished only when necessary.

Fig. 1 is a perspective view of an embodiment of a polishing machine of the present invention, fig. 2 is a perspective view of a polishing apparatus 104, and referring to fig. 1 and 2, a polishing machine according to an embodiment of an aspect of the present invention, for polishing a workpiece, includes: a base 101, an X-axis drive section 102, a Y-axis drive section 103, a polishing device 104, and a table 105. The gantry 106 is mounted on the base 101. The X-axis drive unit 102 is mounted to a gantry 106. The Y-axis drive unit 103 is attached to the base 101 and located below the gantry 106. The polishing apparatus 104 is mounted on the X-axis drive unit 102, and the polishing apparatus 104 includes: a Z-axis drive section 107, a rotation drive section 108, and a polishing section 109. The Z-axis drive unit 107 is mounted on the X-axis drive unit 102. The rotation driving unit 108 is mounted on the Z-axis driving unit 107. The polishing unit 109 is mounted on the rotary drive unit 108 and is driven to rotate by the rotary drive unit 108, and the polishing unit 109 includes a plurality of polishing spindles 110 arranged at intervals in a driving direction of the rotary drive unit 108. A table 105 is mounted on the Y-axis drive section 103 for holding a workpiece to be polished.

In the present embodiment, since the polishing apparatus 104 has a plurality of polishing spindles 110, different polishing spindles 110 can be switched according to different polishing processes, which not only can perform different polishing processes on a workpiece, but also has a compact structure.

Specifically, the workpiece is not particularly limited as long as it is a workpiece to be polished, and may be various types of workpieces such as die cast pieces and machined pieces. The material of the workpiece is not particularly limited as long as it is a material capable of polishing, and a die casting is taken as an example, and the material of the workpiece as a die casting may be a die casting made of various metal materials such as steel, copper alloy, aluminum alloy, zinc alloy, and the like.

Specifically, the X-axis driving part 102 may include an X-axis servo motor 111, an X-axis linear slide 112, and an X-axis screw transmission 113. The X-axis servo motor 111, the X-axis linear slide rail 112, and the X-axis screw transmission 113 are respectively mounted to the gantry 106. The Z-axis drive unit 107 is supported and guided by the X-axis linear slide rail 112, and the Z-axis drive unit 107 is connected to an X-axis screw nut (not shown) of the X-axis screw transmission 113. Thus, the X-axis servo motor 111 can drive the X-axis screw actuator 113 to rotate, and the Z-axis drive unit 107 can be moved along the X-axis.

Specifically, the Y-axis driving section 103 includes a Y-axis servo motor 114, a Y-axis linear slide 115, and a Y-axis screw transmission 116. A Y-axis servo motor 114, a Y-axis linear slide 115, and a Y-axis screw transmission 116 are respectively attached to the base 101. The table 105 is supported and guided by a Y-axis linear slide rail 115, and the table 105 is connected to a Y-axis screw nut (not shown) of a Y-axis screw transmission 116. Thus, the Y-axis servomotor 114 can rotate the Y-axis screw actuator 116, and the table 105 can be moved along the Y-axis.

In some embodiments, in order to improve the working efficiency of the polishing machine, the Y-axis driving unit 103 includes a plurality of stages arranged at intervals in the X-axis direction, and each Y-axis driving unit 103 carries one table 105. Specifically, the Y-axis drive section 103 includes, for example, two, and when the X-axis drive section 102, the polishing device 104, and one of the Y-axis drive sections 103 cooperate with each other to polish a workpiece, the workpiece can be clamped on the table 105 of the other Y-axis drive section 103, whereby the work efficiency of the polishing machine can be improved.

Specifically, the polishing apparatus 104 further includes a first mount 117, and the Z-axis drive section 107 is mounted to the first mount 117 and is carried to the X-axis drive section 102 by the first mount 117. The rotation driving unit 108 is driven by the Z-axis driving unit 107 to move in the Z-axis direction. The polishing section 109 further includes a second attachment member 118, and the second attachment member 118 is mounted on the rotation driving section 108 and is driven to rotate by the rotation driving section 108. The plurality of polishing spindles 110 are respectively mounted to the second mounting member 118 and are spaced apart on the second mounting member in the driving direction (circumferential direction) of the rotary drive section 108. Since the polishing section 109 has a plurality of polishing spindles 110 and can be rotationally driven by the rotational drive section 108, it is possible to switch different polishing spindles 110 by rotating the polishing section 109, whereby different polishing processes can be performed on a workpiece. In addition, since the polishing spindles 110 are concentrated on one second mounting member 118, the structure is also more compact.

In some embodiments, the Z-axis driving part 107 includes: a Z-axis servo motor 119, a Z-axis linear slide 120 and a Z-axis screw transmission 121. Wherein a Z-axis servo motor 119 is mounted to the first mount 117. The Z-axis linear slide 120 is attached to the first attachment 117, and supports and guides the rotary drive unit 108. The Z-axis screw actuator 121 is rotationally driven by a Z-axis servomotor 119, and is connected to the rotational drive section 108. Specifically, the first mounting member 117 is, for example, plate-shaped, and is mounted to the X-axis driving section 102 as a mounting substrate of the polishing apparatus 104. The Z-axis screw actuator 121 and the Z-axis servomotor 119 are connected by, for example, a coupling, and the Z-axis screw actuator 121 is connected to the rotary drive unit 108 by a third mounting member 122. Thus, before the polishing section 109 is rotationally driven by the rotational drive section 108, the polishing spindle 110 of the polishing section 109 and the workpiece on the table 105 can be prevented from interfering with each other by the Z-axis drive section 107 driving the rotational drive section 108 to retract in the Z-axis direction.

Fig. 3 is a side view of the polishing apparatus 104, fig. 4 is a perspective view of the polishing apparatus 104 after detaching the polishing section 109, referring to fig. 3 and 4, and with additional reference to fig. 2, in some embodiments, in order to improve stability of the polishing apparatus 104, the rotation driving section 108 includes: a rotary drive motor 123 and an index plate 124. The index plate 124 is driven to rotate by a rotation driving motor 123, and the polishing portion 109 is attached to the index plate 124. Specifically, the polishing portion 109 is mounted to the index plate 124 by the second mounting member 118. As the rotation driving motor 123, various known motors such as a servo motor and a stepping motor can be used. The indexing disk 124 may be a commercially available indexing disk 124, the rotary drive motor 123 being connected to an input 125 of the indexing disk 124, and the second mounting member 118, for example, in the form of a plate, being mounted to an output 126 of the indexing disk 124. By using the index plate 124, the rigidity of the rotary drive section 108 can be improved, and the rotary drive section 108 can be prevented from being shaken when the polishing spindle 110 is operated, thereby improving the stability of the polishing apparatus 104.

With continued reference to fig. 2, in some embodiments, to improve the polishing accuracy of the workpiece, the index plate 124 is a three-division index, the polishing spindle 110 includes a cutting polishing spindle 110a, a floating rotary polishing spindle 110b, and a reciprocating filing polishing spindle 110c, and the cutting polishing spindle 110a, the floating rotary polishing spindle 110b, and the reciprocating filing polishing spindle 110c are uniformly distributed in the driving direction of the rotary drive motor 123.

With continued reference to FIG. 2, various polishing spindles 110 are described below using die castings as an example.

In some embodiments, to improve the surface finish of the die cast part, the finishing spindle 110 includes a cutting finishing spindle 110 a. Specifically, the polishing spindle 110a for cutting may be selected from, for example, a rigid milling cutter (rigid spindle). Further, the cutting buffing spindle 110a may be a pneumatic rigid spindle or an electric rigid spindle. By selecting, for example, a rigid milling cutter as the polishing spindle 110a for cutting, it is possible to improve the smoothness of the die cast surface and further improve the surface accuracy of the die cast.

In some embodiments, to deburr the corners of the die cast part, the buffing spindle 110 includes a floating rotary buffing spindle 110 b. Specifically, the floating rotary polishing spindle 110b may be, for example, a pneumatic floating polishing spindle 110 floating in a radial direction of the spindle. In addition, the floating output force of the floating rotary polishing spindle 110b can be adjusted by adjusting the magnitude of the air pressure. By using the floating rotary burnishing spindle 110b, burrs at corners or hole sites of the die casting can be effectively removed, and surface damage of the die casting caused by rigid collision of the spindle and the die casting can be prevented, thereby ensuring surface accuracy of the die casting.

In some embodiments, to remove burrs from the surface of the die cast part, a reciprocating filing and polishing spindle 110c is included in the polishing spindle 110. Specifically, the reciprocating filing and polishing main shaft 110c may be, for example, a pneumatic main shaft floating in the axial direction of the main shaft, and further, the floating output force of the reciprocating filing and polishing main shaft 110c in the axial direction of the main shaft may be adjusted by adjusting the magnitude of the air pressure. By polishing the main shaft 110c using a reciprocating file, fine burrs on the surface of the die casting can be effectively removed, the surface finish of the die casting can be further improved, and damage to the surface of the die casting caused by the rigid collision of the main shaft and the die casting can be prevented, thereby further ensuring the surface finish of the die casting.

Although the above description has been made by taking three polishing spindles 110 as an example, the number of the polishing spindles 110 is not limited thereto, and may be adjusted according to actual needs.

Fig. 5 is a perspective view of an embodiment of a polishing machine tool equipped with a dust-proof portion 127, fig. 6 is a side view of the polishing machine tool, fig. 7 is a cross-sectional view taken along a-a in fig. 5 and shows an installation schematic view of a sliding door portion 130, in fig. 5 and 6, the dust-proof portion 127 is partially cut away for facilitating the observation of the housing chamber 128, and referring to fig. 5 to 7, since a large amount of dust is generated during polishing and the dust is prevented from polluting the workshop environment, in some embodiments, the dust-proof portion 127 is further included, the dust-proof portion 127 is installed to the base 101, and the housing chamber 128 is formed between the dust-proof portion 127 and the base 101. The X-axis drive unit 102, the Y-axis drive unit 103, the polishing apparatus 104 (shielded by the dust-proof unit 127 in fig. 5), and the table 105 are accommodated in the accommodation chamber 128, respectively.

In some embodiments, the dust guard 127 includes: a dust cover 129 and a sliding door portion 130. The dust cover 129 is attached to the base 101, and the dust cover 129 has a first opening 131, a first guide portion 132 extending in the X-axis direction is provided above the first opening 131, and a second guide portion 132 extending in the X-axis direction is provided below the first opening 131. The sliding door portion 130 is mounted to the first guide portion 132 and is slidable along the first and

second guide portions

132 and 132 such that the first opening portion 131 is opened or closed.

Specifically, the dust cover 129 is formed by welding a sheet metal member, for example, and the first opening 131 is used as a position for feeding and discharging a workpiece. In order to easily clean the sliding door part 130, the first guide part 132 is selected from, for example, a linear guide shaft, and a linear bearing 133 capable of sliding on the linear guide shaft is installed above the sliding door part 130. Thus, by using the linear guide shaft as the first guide part 132 and disposing the first guide part 132 above the first opening 131, the first guide part 132 can be prevented from being contaminated with dust to some extent, and the sliding door part 130 can be easily cleaned. In order to further facilitate cleaning of the sliding door section 130, a guide member having an i-shaped or rectangular cross section, for example, is selected as the second guide portion 132, and a roller 134 or the like capable of being held by the guide member is installed below the sliding door section 130. When the sliding door part 130 is pushed, the roller 134 slides along the guide member as the second guide part 132 while holding the guide member therebetween. By selecting such a combination of the guide and the roller 134, not only dust on the guide can be easily cleaned, but also the roller 134 can smoothly slide along the guide without causing jamming of the sliding door section 130 and the like even in the case where dust is present on the guide and the roller 134.

Further, a first dust-proof plate 135 for covering the first guide portion 132 and a second dust-proof plate 136 for covering the second guide portion 132 may be mounted on the dust-proof cover 129. In order to easily clean the first dust-proof plate 135 and the second dust-proof plate 136, the first dust-proof plate 135 and the second dust-proof plate 136 are provided in an inclined shape from top to bottom, respectively.

In addition, in order to effectively remove dust during polishing of the workpiece, the polishing machine may further include a dust removing device (not shown), for example, a dust removing device known to those skilled in the art may be used, and a dust removing pipe of the dust removing device is mounted to the dust cover 129 and communicates with the receiving chamber 128. The position of the dust removal pipe is not particularly limited, and may be, for example, the rear or upper surface of the dust cover 129.

Next, the other dust-proof components in the housing chamber 128 will be described in detail.

Fig. 8 is a perspective view showing an installation of the first telescopic cover 139 of fig. 6, fig. 9 is a side view showing an installation of the first telescopic cover 139 of fig. 6, fig. 8 and 9 are referred to, and with additional reference to fig. 6, in some embodiments, in order to effectively isolate a non-working space (a first space 137 described below, for example, a space mainly used for component installation, electric control equipment installation, etc.) and a working space (a second space 138 described below) in the housing chamber 128, one first telescopic cover 139 is provided on each of both sides of the polishing apparatus 104 in the X-axis direction. One end of the first retractable cover 139 is connected to the dust-proof portion 127, and the other end is connected to the polishing device 104, respectively, so that the first space 137 in the accommodating chamber 128 is isolated from the second space 138, where the first space 137 is a space in the accommodating chamber 128 for accommodating the X-axis driving portion 102, and the second space 138 is a space in the accommodating chamber 128 for accommodating the polishing device 104 and the platen 105. Specifically, the first telescopic hood 139 may be, for example, an organ hood, and is telescopic together in the X-axis direction as the polishing apparatus 104 is driven by the X-axis drive section 102. One end of the first telescopic cover 139 in the X-axis direction is connected to the dust cover 129, and the other end of the first telescopic cover 139 in the X-axis direction is connected to the polishing apparatus 104. Further, a third guide portion 140 is provided above the dust cover 129, the third guide portion 140 includes, for example, a first slide groove 141 extending in the X-axis direction, and an upper portion of the first telescopic cover 139 slides on the first slide groove 141. The gantry 106 is provided with a fourth guide 142 below the X-axis drive unit 102, the fourth guide 142 includes a guide plate 143 extending in the X-axis direction, and the guide plate 143 extends across both ends of the dust cover 129 in the X-axis direction. The guide plate 143 is provided with a second slide groove 144 extending in the X-axis direction, and the lower portion of the first telescopic cover 139 slides on the second slide groove 144. Thus, the polishing apparatus 104 and the first retractable cover 139 on both sides of the polishing apparatus 104 in the X-axis direction effectively separate the first space 137, which is a non-working space (component mounting space), and the second space 138, which is a working space, as a whole, and thus it is possible to effectively prevent dust and the like from contaminating components of the first space 137, such as the X-axis drive unit 102 and the ceiling portion of the gantry 106. Therefore, the first space 137 does not need to be cleaned, and the cleaning difficulty of the accommodating cavity 128 is reduced.

Fig. 10 is a schematic view of the second telescopic cover 145 in fig. 9 in a front view direction, referring to fig. 10 and with continued reference to fig. 9, in some embodiments, in order to further effectively prevent dust from the X-axis driving part 102, two second telescopic covers 145 are respectively provided on both sides of the polishing apparatus 104 in the X-axis direction. The second telescopic covers 145 are respectively connected to the gantry 106 at one end and the polishing apparatus 104 at the other end, and respectively cover a portion of the X-axis driving part 102. Specifically, the second telescopic cover 145 may be, for example, an accordion cover, which is telescopic together in the X-axis direction as the polishing apparatus 104 is driven by the X-axis drive section 102. The second telescopic cover 145 may be, for example, a known organ cover for a machine tool, and is used to prevent dust from the X-axis drive unit 102. By further providing the second telescopic cover 145 in addition to the first telescopic cover 139, it is possible to provide dual dust protection to the X-axis driving unit 102, and it is possible to further prevent dust from being applied to the X-axis driving unit 102.

With reference to fig. 9, in order to prevent the gantry 106 or the base 101 from being contaminated by the lubricant oil or grease, etc. of the X-axis linear slide rail 112 or the X-axis screw transmission 113 of the X-axis driving unit 102 from dropping and mixing with dust, etc., the guide plate 143 is sealably attached to the gantry 106 by, for example, a sealant, etc., and a first oil-containing groove 146 extending in the X-axis direction is provided on an upper portion of the guide plate 143. Thus, the first oil containing groove 146 can directly receive the lubricating oil, grease, or the like dropped from the X-axis linear slide rail 112 or the X-axis screw transmission 113, thereby preventing the gantry 106, the base 101, or the like from being contaminated and difficult to clean.

Fig. 11 is a perspective view illustrating the installation of the first dust cover 147 and the second dust cover 149, and referring to fig. 11, in some embodiments, in order to effectively prevent dust from the Z-axis driving part 107 and the rotation driving part 108, the dust cover further includes a first dust cover 147, and the first dust cover 147 covers the Z-axis driving part 107 and the rotation driving part 108. Specifically, a first dust cover 147 may be mounted to the third mount 122 (supplementary reference 2, fig. 3), the first dust cover 147 being driven by the Z-axis drive 107 along with the rotational drive 108. The first dust cover 147 is provided with a first escape hole 148 at a position corresponding to the output end 126 of the index plate 124 of the rotary drive unit 108 to allow the second attachment member 118 to be connected to the output end 126 of the index plate 124 and to prevent interference with the first dust cover 147 when the index plate 124 rotates. The Z-axis drive unit 107 may be provided with a second dust cover 140 on the first attachment 117 (see fig. 2 and 3 for assistance), and the second dust cover 149 may cover, for example, the Z-axis servomotor 119 of the Z-axis drive unit 107. The first dust cover 147 slides relative to the second dust cover 149, and a joint strip 150 is provided between the first dust cover 147 and the second dust cover 149, and the joint strip 150 is attached to the first dust cover 147 and the second dust cover 149, respectively, in order to prevent dust from contaminating the Z-axis driving portion 107 through a gap between the first dust cover 147 and the second dust cover 149. By providing the joint strip 150, dust and the like can be prevented from passing through the gap between the first dust cover 147 and the second dust cover 149.

Fig. 12 is a perspective view schematically illustrating the installation of a third dust prevention cover 151, and referring to fig. 12, in some embodiments, in order to prevent dust from contaminating the polishing section 109, the third dust prevention cover 151 is further included, and the third dust prevention cover 151 covers the main bodies of the plurality of polishing spindles 110 and exposes the head of each polishing spindle 110. Specifically, the third dust hood 151 is mounted to the second mounting member 118 (refer to fig. 2 and 3 for assistance), and the third dust hood 151 is opened with a second avoiding hole 156 for allowing the head (i.e., the portion where the tool is mounted) of each polishing spindle 110 to be exposed. This can prevent dust generated by polishing from contaminating other components of the polishing section 109 as much as possible while ensuring the normal operation of each polishing spindle 110.

Fig. 13 is a schematic front view of the third telescopic cover 152 in fig. 8, and referring to fig. 13 and with additional reference to fig. 8, in some embodiments, in order to effectively prevent dust from the Y-axis driving portion 103, one third telescopic cover 152 is provided on each side of the table 105 in the Y-axis direction. One ends of the third telescopic covers 152 are connected to the stages 105, respectively, and the other ends are fixed and cover a part of the Y-axis driving part 103, respectively. Specifically, the Y-axis driving section 103 further includes a rail mount 153 for mounting the Y-axis linear slide 115, and the rail mount 153 is mounted on the base 101. One end of the third telescopic cover 152 is connected to the work table 105, and the other end of the third telescopic cover 152 is connected to the rail mount 153, respectively. In order to more effectively prevent dust from being applied to the Y-axis driving unit 103, for example, a soft guide bar 154 is attached to a side of the rail mounting seat 153, and a plastic material such as POM is selected as the guide bar 154, and the lower portion of the third telescopic cover 152 is slid in the Y-axis direction while being attached to the guide bar 154. This eliminates the gap between the third telescopic cover 152 and the rail mount 153, thereby preventing the Y-axis driving unit 103 from being contaminated with dust and the like.

Further, in order to prevent the lubricant oil or grease of the Y-axis linear guide 115 of the Y-axis driving unit 103 from dropping and mixing with dust to contaminate the base 101 and the like, an oil receiving plate 155 is further mounted above the guide bar 154 in the guide rail mounting seat 153. Thus, the grease or grease dropped from the Y-axis linear slide rail 115 is directly received by the grease receiving plate 155, and the base 101 is prevented from being contaminated and difficult to clean.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A polishing machine for polishing a workpiece, comprising:

a base station provided with a portal frame;

an X-axis driving part mounted to the gantry;

a Y-axis driving part which is arranged on the base and is positioned below the portal frame;

a polishing device mounted on the X-axis drive unit, the polishing device including: the polishing device comprises a Z-axis driving part, a rotary driving part and a polishing part, wherein the Z-axis driving part is mounted on the X-axis driving part, the rotary driving part is mounted on the Z-axis driving part, the polishing part is mounted on the rotary driving part and driven by the rotary driving part to rotate, and the polishing part comprises a plurality of polishing main shafts which are distributed at intervals along the driving direction of the rotary driving part;

and the workbench is carried on the Y-axis driving part and used for clamping a workpiece to be polished.

2. The polishing machine according to claim 1, wherein the Y-axis drive unit includes a plurality of Y-axis drive units spaced apart in an X-axis direction, and each of the Y-axis drive units carries one of the tables.

3. The polishing machine according to claim 1, wherein the rotary drive section comprises:

a rotary drive motor;

an index plate rotated by the rotation driving motor, the polishing portion being mounted to the index plate.

4. A polishing machine as set forth in claim 3 wherein said index plate is a three-division index plate, said polishing spindles include a cutting polishing spindle, a floating rotary polishing spindle, and a reciprocating filing polishing spindle, said cutting polishing spindle, said floating rotary polishing spindle, and said reciprocating filing polishing spindle being uniformly distributed in a driving direction of said rotary drive motor.

5. The polishing machine according to claim 1, further comprising a dust-proof portion attached to the base, a housing chamber being formed between the dust-proof portion and the base, the X-axis drive portion, the Y-axis drive portion, the polishing device, and the table being housed in the housing chamber, respectively.

6. The polishing machine tool according to claim 5, wherein the dust-proof portion comprises:

a dust cover attached to the base, the dust cover having a first opening, a first guide portion extending in the X-axis direction being provided above the first opening, and a second guide portion extending in the X-axis direction being provided below the first opening;

a sliding door part mounted to the first guide part and slidable along the first and second guide parts such that the first opening part is opened or closed.

7. The polishing machine of claim 1, further comprising a first dust cover that covers the Z-axis drive section and the rotary drive section.

8. The polishing machine according to claim 5, wherein a first telescopic cover is respectively arranged at two sides of the polishing device along the X-axis direction;

one end of the first telescopic cover is connected to the dustproof portion respectively, the other end of the first telescopic cover is connected to the polishing device respectively, and a first space in the accommodating cavity is isolated relative to a second space, wherein the first space is a space in the accommodating cavity for accommodating the X-axis driving portion, and the second space is a space in the accommodating cavity for accommodating the polishing device and the workbench.

9. The polishing machine according to claim 1 or 8, wherein a second telescopic cover is provided on each of both sides of the polishing device in the X-axis direction;

one end of the second telescopic hood is connected to the portal frame, the other end of the second telescopic hood is connected to the polishing device, and the second telescopic hood covers a part of the X-axis driving part.

10. The polishing machine according to claim 1, wherein a third telescopic cover is provided on each of both sides of the table in the Y-axis direction;

one end of the third telescopic cover is connected to the workbench, and the other end of the third telescopic cover is fixed and covers a part of the Y-axis driving part.