Machining precision adjusting device for grinding machine, grinding machine and machining adjusting method

Abstract

The invention provides a machining precision adjusting device for a grinding machine, the grinding machine and a machining adjusting method.The machining precision adjusting device comprises a base, a precision adjusting part and a workpiece abutting part, the precision adjusting part comprises a first adjusting set and a second adjusting set, and the first adjusting set comprises a sliding vertical plate and a motion conversion block; the sliding vertical plate is slidably arranged on the base in the first direction, the opposite side faces of the motion conversion block and the sliding vertical plate are provided with an inclined friction block and an inclined driving groove which are matched with each other respectively, and the motion conversion block moves in the second direction; the workpiece abutting part is arranged on the top of the first adjusting set in the mode of being capable of adjusting the third direction. According to the machining precision adjusting device for the grinding machine, the base, the precision adjusting part and the workpiece abutting part are matched, so that the workpiece abutting part can adjust the straightness of an upper generatrix and the straightness of a side generatrix; the whole structure is compact, adjustment is convenient and fast, and high-precision external thread machining of the lead screw workpiece can be achieved.

Description

Technical Field

[0001] This application relates to the field of ball screw machining grinding machine technology, and in particular to a machining accuracy adjustment device for a grinding machine, a grinding machine, and a machining adjustment method. Background Technology

[0002] As a key transmission component in the machinery industry, the lead screw plays an important role in the manufacturing of high-end equipment such as industrial machine tools. The machining accuracy of the lead screw thread directly affects the positioning accuracy of mechanical equipment.

[0003] The external thread of a lead screw is mainly machined using an external thread grinder, and its machining accuracy is also ensured by the external thread grinder. However, since lead screws are generally slender rod-like parts, they are prone to deformation during the grinding process, making it difficult to maintain ideal coaxiality at both ends, thus affecting the stability of the thread machining accuracy.

[0004] Therefore, it is necessary to design a machining accuracy adjustment device for grinding machines. Summary of the Invention

[0005] In view of this, in order to overcome the shortcomings of the prior art, the present invention provides a machining accuracy adjustment device for a grinding machine, a grinding machine and a machining adjustment method, which effectively solves the problem that the existing grinding machine cannot maintain ideal coaxiality when machining the external thread of the lead screw, resulting in low machining accuracy.

[0006] According to a first aspect of the present invention, a machining accuracy adjustment device for a grinding machine is provided for adjusting the machining accuracy of one end of a lead screw workpiece. The machining accuracy adjustment device includes a base, an accuracy adjustment section, and a workpiece abutment section. The accuracy adjustment section includes a first adjustment group and a second adjustment group. The first adjustment group includes a sliding vertical plate and a motion conversion block. The sliding vertical plate is slidably disposed on the base along a first direction. The sides of the motion conversion block and the sliding vertical plate facing each other are respectively provided with mutually cooperating inclined friction blocks and inclined driving grooves. When the sliding vertical plate moves along the first direction, the motion conversion block moves along a second direction driven by the inclined friction blocks and the inclined driving grooves. The workpiece abutment section is adjustablely disposed on the top of the first adjustment group along a third direction via the second adjustment group.

[0007] Preferably, the first direction, the second direction, and the third direction are perpendicular to each other.

[0008] Preferably, the first adjustment group further includes a first fine-tuning component and a first locking component. A sliding lock block is provided at the bottom of the sliding upright plate, and a sliding lock groove for the sliding lock block to slide is provided on the base. The first fine-tuning component passes through the end of the sliding lock groove in the first direction and is connected to the sliding lock block. The first locking component passes through the side wall of the sliding lock groove and abuts against the sliding lock block.

[0009] Preferably, both the first fine-tuning component and the first locking component include an operating handle, a mounting bracket, and a drive shaft. The operating handle is disposed at one end of the drive shaft, and the drive shaft is rotatably disposed on the mounting bracket. The first fine-tuning component further includes a driving bolt passing through the sliding lock block, and the driving bolt is connected to the drive shaft. The first locking component further includes an abutment block passing through the side wall of the sliding lock groove, the abutment block being able to abut against the sliding lock block, and the abutment block being connected to the drive shaft.

[0010] Preferably, the second adjustment group includes an adjustment slide rail, a second fine-tuning component, and a second locking component arranged along the third direction. The bottom of the workpiece abutment portion is provided with an adjustment slider that cooperates with the adjustment slide rail. The second fine-tuning component passes through the adjustment slider and is connected to the second locking component.

[0011] Preferably, the adjusting slide rail is formed into an inverted trapezoidal structure, and the second locking component includes a locking clamping block and a locking bolt. The locking clamping block includes a main body, a first fastening part and a second fastening part. The first fastening part and the second fastening part are disposed at the bottom of both ends of the main body. The first fastening part and the second fastening part fasten to two opposite sides of the inverted trapezoidal structure. The locking bolt passes through the main body so that the first fastening part and the second fastening part can clamp onto the adjusting slide rail.

[0012] Preferably, the motion conversion block has a supporting power hole on the side facing the base, which is arranged along the second direction. A power output component is also provided between the base and the motion conversion block. The power output component includes a supporting power member, which passes through the motion conversion block and has one end located in the supporting power hole. The supporting power member includes a supporting column, a power spring, and a power adjusting bolt. The supporting column is sleeved on the power adjusting bolt, and a power spring is provided between the supporting column and the power adjusting bolt.

[0013] Preferably, the inner wall of the inclined drive groove is provided with a sliding band.

[0014] According to a second aspect of the present invention, a grinding machine is provided, wherein the grinding machine includes a worktable base, a grinding wheel device, and a machining table, wherein the grinding wheel device and the machining table are both disposed on the worktable base, and the machining table includes a machining table base, a clamping and rotating device, and a machining accuracy adjustment device for a grinding machine as described above, wherein the machining accuracy adjustment device and the clamping and rotating device are disposed opposite to each other at both ends of the machining table base for clamping both ends of the lead screw workpiece, and a bottom connecting block is further provided at the bottom of the base of the machining accuracy adjustment device, wherein the machining accuracy adjustment device is disposed on the machining table base in an adjustable position along the first direction via the bottom connecting block.

[0015] According to a third aspect of the present invention, a machining adjustment method is provided, wherein the machining adjustment method utilizes a machining accuracy adjustment device for a grinding machine as described above to adjust the accuracy of a lead screw workpiece clamped in a grinding machine, the grinding machine including a clamping rotation device, the clamping rotation device and the machining accuracy adjustment device respectively clamping both ends of the lead screw workpiece; the machining adjustment method includes: clamping one end of the lead screw workpiece by the clamping rotation device, and moving the machining accuracy adjustment device along a first direction on the track of the grinding machine until the workpiece abutting portion presses against the other end of the lead screw workpiece. The accuracy of the lead screw workpiece is measured using a dial indicator mounted on the track of the grinding machine. The probe of the dial indicator is placed against the upper generatrix of the lead screw workpiece, and the dial indicator is repeatedly moved along a first direction to measure the straightness of the lead screw workpiece. The straightness of the upper generatrix of the lead screw workpiece is adjusted through the first adjustment group. The probe of the dial indicator is placed against the side generatrix of the lead screw workpiece, and the dial indicator is repeatedly moved along a first direction to measure the straightness of the lead screw workpiece. The straightness of the side generatrix of the lead screw workpiece is adjusted through the second adjustment group.

[0016] The machining accuracy adjustment device for grinding machines according to the present invention, through the cooperation of a base, an accuracy adjustment part, and a workpiece abutment part, enables the workpiece abutment part to adjust the straightness of the upper generatrix and the straightness of the side generatrix. The workpiece abutment part is disposed on top of a first adjustment group via a second adjustment group, which can adjust the displacement in a third direction. The first adjustment group, through the cooperation of a sliding vertical plate and a motion conversion block, can adjust the displacement in a second direction, thereby adjusting the machining accuracy of the lead screw workpiece. This machining accuracy adjustment device for grinding machines has a compact overall structure, is easy to adjust, and can achieve high-precision external thread machining of lead screw workpieces.

[0017] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a grinding machine machining accuracy adjustment device according to an embodiment of the present invention is shown; Figure 2 A rear view of a grinding accuracy adjustment device according to an embodiment of the present invention is shown; Figure 3 A rear view of the base and precision adjustment part according to an embodiment of the present invention is shown; Figure 4 An exploded view of the base and the precision adjustment part according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the structure of the second adjustment group according to an embodiment of the present invention is shown; Figure 6 A cross-sectional view of a first locking assembly and a sliding upright plate according to an embodiment of the present invention is shown; Figure 7 A cross-sectional view of a power output assembly according to an embodiment of the present invention is shown; Figure 8 A cross-sectional view of a machining accuracy adjustment device according to an embodiment of the present invention is shown; Figure 9 A schematic diagram of the structure of a grinding machine according to an embodiment of the present invention is shown; Figure 10 A schematic diagram of the processing table according to an embodiment of the present invention is shown.

[0020] Reference numerals: 1-Base; 101-Sliding lock groove; 102-Bottom connecting block; 2-Precision adjustment part; 201-Sliding upright plate; 2011-Inclined friction block; 2012-Sliding lock block; 202-Motion conversion block; 2021-Inclined drive groove; 2022-Sliding belt; 203-First fine-tuning component; 204-First locking component; 205-Operating handle; 206-Mounting support; 207-Drive shaft; 208-Drive bolt; 209-Abutment block; 210-Second fine-tuning component; 211 - Second locking assembly; 212 Adjusting slide rail; 213 Locking clamping block; 2131 Main body; 2132 First fastening part; 2133 Second fastening part; 214 Supporting power hole; 215 Supporting column; 216 Power spring; 217 Power adjusting bolt; 3 Workpiece abutment part; 4 Worktable base; 5 Grinding wheel device; 6 Machining table base; 601 Track; 7 Clamping rotation device; 8 Lead screw workpiece; S1 First direction; S2 Second direction; S3 Third direction. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0022] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] According to a first aspect of the present invention, a machining accuracy adjustment device for a grinding machine is provided, such as... Figures 1 to 10 As shown, the machining accuracy adjustment device is used in a grinding machine and can be used for clamping and positioning accuracy adjustment of one end of the lead screw workpiece 8. The machining accuracy adjustment device for the grinding machine includes a base 1, an accuracy adjustment part 2, and a workpiece abutment part 3.

[0026] In the following description, reference will be made to Figures 1 to 10 The detailed structure of the base 1, precision adjustment part 2, and workpiece contact part 3 of the machining accuracy adjustment device for the grinding machine is described in detail.

[0027] like Figures 1 to 4 As shown, in this embodiment, the machining accuracy adjustment device for the grinding machine is mounted on the track 601 of the machining table base 6 of the grinding machine via a base 1. To clamp the lead screw workpiece 8, the base 1 is slidably mounted on the track 601 via four bottom connecting blocks 102 fixedly installed at the bottom of the base 1. The fixed connection method can be, for example, using connecting bolts, and the sliding method can be, for example, a common slide rail and slider combination. The four bottom connecting blocks 102 of the base 1 allow the machining accuracy adjustment device to be adjusted in the first direction S1. The accuracy adjustment unit 2 is used to adjust the position of the clamped lead screw workpiece 8 so that the lead screw workpiece 8 has the straightness required for machining. The machining straightness requirements for the lead screw workpiece 8 may include the straightness of the upper generatrix and the straightness of the side generatrix. Therefore, to meet the position adjustment in different directions, the accuracy adjustment unit 2 can be adjusted in the second direction S2 and the third direction S3. Figure 3 and Figure 9As shown, the first direction S1, the second direction S2, and the third direction S3 can be understood as the axial direction of the lead screw workpiece 8, the radial direction of the lead screw workpiece 8, and the height direction of the position of the lead screw workpiece 8, respectively. Furthermore, the first direction S1, the second direction S2, and the third direction S3 do not refer to a single direction, but rather to reciprocating directions.

[0028] The grinding machine uses a machining accuracy adjustment device to abut one end of the lead screw workpiece 8 through the workpiece abutment part 3. The other end of the lead screw workpiece 8 is clamped by a clamping and rotating device 7 fixedly installed on the machining table base 6. The clamping and rotating device 7 and the workpiece abutment part 3 abut both ends of the lead screw workpiece 8.

[0029] Furthermore, the precision adjustment unit 2 may include a first adjustment group and a second adjustment group. The first adjustment group can adjust the position of the lead screw workpiece 8 in the second direction S2, and the second adjustment group can adjust the position of the lead screw workpiece 8 in the third direction S3.

[0030] Specifically, the first adjustment group may include a sliding upright plate 201 and a motion conversion block 202. The sliding upright plate 201 is slidably disposed on the base 1 along a first direction S1. The sides of the motion conversion block 202 and the sliding upright plate 201 facing each other are respectively provided with mutually cooperating inclined friction blocks 2011 and inclined driving grooves 2021. When the sliding upright plate 201 moves along the first direction S1, the motion conversion block 202 moves along the second direction S2 by being driven by the inclined friction blocks 2011 and the inclined driving grooves 2021. The motion conversion block 202 can convert the movement in the first direction S1 to the movement in the second direction S2. The inclination angle of the inclined friction blocks 2011 and the inclined driving grooves 2021 is 5-10 degrees. When the sliding plate 201 moves along the first direction S1, the motion conversion block 202 is driven by the sliding friction force through the cooperation of the inclined friction block 2011 and the inclined drive groove 2021, so that the motion conversion block 202 can move along the second direction S2. Since the workpiece abutment part 3 is installed on the top of the motion conversion block 202, the workpiece abutment part 3 can be driven to move along the second direction S2, thereby adjusting the straightness of the upper generatrix of the lead screw workpiece 8.

[0031] Preferably, in the embodiment, there are two sliding plates 201, which are respectively disposed at both ends of the motion conversion block 202. The two sliding plates 201 can ensure the stable movement of the motion conversion block 202.

[0032] The workpiece abutment 3 is adjustablely positioned on top of the first adjustment group along a third direction S3 via a second adjustment group. The second adjustment group independently adjusts the displacement in the third direction S3, thereby adjusting the straightness of the side generatrix of the lead screw workpiece 8. Through the cooperation of the first and second adjustment groups, the workpiece abutment 3 can be displaced in both the second direction S2 and the third direction S3. Furthermore, in this embodiment, since both ends of the lead screw workpiece 8 are already clamped by the workpiece abutment 3 and the rotating device 7 during machining, no further large positional adjustments are required. Therefore, the adjustment described in this embodiment can be understood as fine-tuning, which improves the machining accuracy of the lead screw workpiece 8 to meet the requirements of high machining accuracy. The workpiece abutment 3 can be a common center used for clamping workpieces, which will not be described in detail here; those skilled in the art can select its model and specifications.

[0033] The machining accuracy adjustment device for this grinding machine, through the cooperation of the base 1, the accuracy adjustment part 2, and the workpiece abutment part 3, allows the workpiece abutment part 3 to adjust the straightness of the upper generatrix and the side generatrix. The workpiece abutment part 3 is set on top of the first adjustment group through a second adjustment group, which can adjust the displacement in the third direction S3. The first adjustment group, through the cooperation of the sliding vertical plate 201 and the motion conversion block 202, can adjust the displacement in the second direction S2, thereby adjusting the machining accuracy of the lead screw workpiece 8. The machining accuracy adjustment device for this grinding machine has a compact overall structure, is easy to adjust, and can achieve high-precision external thread machining of the lead screw workpiece 8.

[0034] Preferably, such as Figure 3 and Figure 9 As shown, in the embodiment, the first direction S1, the second direction S2, and the third direction S3 are perpendicular to each other.

[0035] Preferably, such as Figure 4 As shown, in this embodiment, a sliding band 2022 is provided on the inner wall of the inclined drive groove 2021. The sliding band 2022 can be, for example, a friction-reducing rod. The friction-reducing rod is confined inside the inclined drive groove 2021 by an end cap and a semi-circular hole formed in the inclined drive groove 2021.

[0036] Preferably, such as Figures 1 to 4As shown, in this embodiment, the first adjustment group may further include a first fine-tuning component 203 and a first locking component 204. The first fine-tuning component 203 can drive the sliding upright plate 201 to move in the first direction S1, and the first locking component 204 can lock the sliding upright plate 201 to prevent it from moving. A sliding locking block 2012 is provided at the bottom of the sliding upright plate 201, and the base 1 has a sliding locking groove 101 for the sliding locking block 2012 to slide. The sliding locking groove 101 can be formed into an inverted T-shaped structure, and the sliding locking block 2012 can be formed into an inverted T-shaped structure corresponding to the sliding locking groove 101. The inverted T-shaped structure can ensure that it does not come out during sliding and that the sliding is stable. The first fine-tuning component 203 passes through the end of the sliding locking groove 101 in the first direction S1 and is connected to the sliding locking block 2012. The first locking component 204 passes through the side wall of the sliding locking groove 101 and abuts against the sliding locking block 2012. In use, the first locking component 204 is separated from the sliding lock block 2012, so that the sliding upright plate 201 can be displaced in the first direction S1. Then, the first fine-tuning component 203 drives the sliding upright plate 201 to move in the sliding lock groove 101.

[0037] Preferably, such as Figures 1 to 4 and Figure 6 As shown, in the embodiment, both the first fine-tuning component 203 and the first locking component 204 include an operating handle 205, a mounting bracket 206, and a drive shaft 207.

[0038] Specifically, the operating handle 205 is located at one end of the drive shaft 207, the drive shaft 207 is rotatably mounted on the mounting support 206, the drive shaft 207 is fitted with a bearing, and is fixed inside the mounting support 206 by the bearing outer ring limiting sleeve and the bearing inner ring limiting nut.

[0039] The structures of the first fine-tuning component 203 and the first locking component 204 are similar, except that the drive shaft 207 of the first fine-tuning component 203 is connected to a longer driving bolt 208, and the drive shaft 207 of the first locking component 204 is connected to an abutment block 209 disposed on the side wall of the sliding lock groove 101.

[0040] Specifically, the drive bolt 208 can be driven by the drive shaft 207 and rotates together with the drive shaft 207. One end of the drive bolt 208 is connected to the drive shaft 207, and the other end of the drive bolt 208 passes through the end of the sliding locking groove 101 in the first direction S1 and is connected to the sliding locking block 2012. The operator can rotate the operating handle 205 to drive the drive bolt 208 through the drive shaft 207, causing the sliding locking block 2012 to move. The drive bolt 208 and the sliding locking block 2012 cooperate to form a movement similar to a lead screw and nut.

[0041] The abutment block 209 is formed into a cylindrical structure, which passes through the side wall of the sliding lock groove 101. The abutment block 209 can be driven by the drive shaft 207 and move closer to or further away from the sliding lock block 2012 along the second direction S2. When it is close to and abuts the sliding lock block 2012, the displacement of the sliding lock block 2012 can be restricted by the frictional force of the abutment friction. When it is far away from the sliding lock block 2012, the sliding lock block 2012 is not restricted and can be moved by the first fine adjustment component 203.

[0042] Preferably, such as Figures 1 to 5 As shown, in this embodiment, the second adjustment group may include an adjustment slide rail 212 arranged along the third direction S3, a second fine-tuning component 210, and a second locking component 211. The bottom of the workpiece abutment 3 is provided with an adjustment slider that cooperates with the adjustment slide rail 212 (the structure of the adjustment slider is the same as that of the locking clamping block 213 described below; both can be clamped onto the adjustment slide rail 212, and the workpiece abutment 3 is locked when the adjustment slider is clamped onto the adjustment slide rail 212). The second fine-tuning component 210 passes through the adjustment slider and is connected to the second locking component 211. The second locking component 211 can clamp and lock onto the adjustment slide rail 212. The second fine-tuning component 210 is located at the bottom of the workpiece abutment 3 and connected to the second locking component 211. Since the second locking component 211 can be locked, it can serve as a fixed base for movement. By adjusting the second fine-tuning component 210, the position of the adjustment slider of the workpiece abutment 3 on the adjustment slide rail 212 can be changed.

[0043] Preferably, such as Figures 1 to 5 As shown, in this embodiment, the adjusting slide rail 212 is formed into an inverted trapezoidal structure, and the second locking component 211 may include a locking clamping block 213 and a locking bolt (not shown; it can be seen from the figure that the locking clamping block 213 has a bolt hole in the middle for the locking bolt to pass through). Figure 5 As shown, the locking clamping block 213 may include a main body 2131, a first fastening part 2132 and a second fastening part 2133. The first fastening part 2132 and the second fastening part 2133 are disposed at the bottom of both ends of the main body 2131. The first fastening part 2132 and the second fastening part 2133 fasten to two opposite sides of the adjustment slide rail 212, which is formed into an inverted trapezoidal structure. The locking bolt passes through the main body 2131 so that the first fastening part 2132 and the second fastening part 2133 can be clamped to the adjustment slide rail 212.

[0044] Preferably, such as Figure 5 and Figure 8 As shown in the embodiment, the structure of the second locking component 211 is the same as that of the first fine-tuning component 203, both including an operating handle 205, a mounting bracket 206, a drive shaft 207 and a drive bolt 208, which will not be described in detail here.

[0045] Preferably, such as Figure 4 and Figure 7 As shown in the embodiment, the motion conversion block 202 has a supporting power hole 214 arranged along the second direction S2 on the side facing the base 1. A power output component is also provided between the base 1 and the motion conversion block 202. The power output component may include a supporting power member, which passes through the motion conversion block 202 and one end of the supporting power member is disposed in the supporting power hole 214. The power output component can assist the motion conversion block 202 in raising and lowering, providing support for the motion conversion block 202 to raise and lower, and at the same time, it can limit the displacement of the motion conversion block 202 in the first direction S1, preventing the motion conversion block 202 from moving along the first direction S1.

[0046] Specifically, such as Figure 4 As shown, the supporting power components may include a supporting column 215, a power spring 216, and a power adjusting bolt 217. The supporting column 215 is sleeved on the power adjusting bolt 217, and the power spring 216 is disposed between the supporting column 215 and the power adjusting bolt 217. There are four supporting power components, evenly distributed within the four supporting power holes 214 opened in the base 1. One end of the supporting column 215 has a larger-diameter blind hole to accommodate part of the power spring 216, and the other end has a smaller-diameter blind hole to accommodate the head of the power adjusting bolt 217. A through hole is opened between the two blind holes for the power adjusting bolt 217 to pass through. The power adjusting bolt 217 passes through the supporting column 215, and the lower part of the power adjusting bolt 217 is fixed to the supporting power hole 214 by a fastening bolt. Thus, the elastic force of the spring allows the supporting column 215 to float, thereby providing auxiliary support and serving a limiting function.

[0047] This grinding machine's machining accuracy adjustment device, through the cooperation of a base, an accuracy adjustment section, and a workpiece abutment section, allows the workpiece abutment section to adjust the straightness of the upper and side generatrices. The workpiece abutment section is positioned on top of a first adjustment section via a second adjustment group, which adjusts the displacement in a third direction. The first adjustment group, through the cooperation of a sliding vertical plate and a motion conversion block, adjusts the displacement in a second direction, thereby adjusting the machining accuracy of the lead screw workpiece. This grinding machine's machining accuracy adjustment device has a compact overall structure, is easy to adjust, and can achieve high-precision external thread machining of lead screw workpieces.

[0048] like Figure 9 and Figure 10As shown, according to a second aspect of the present invention, a grinding machine is provided, comprising a machining table base 6, a clamping rotation device 7, and a machining accuracy adjustment device for a grinding machine as described above. The machining accuracy adjustment device and the clamping rotation device 7 are disposed opposite to each other at both ends of the machining table base 6 for clamping both ends of a lead screw workpiece 8. A bottom connecting block 102 is also provided at the bottom of the base 1 of the machining accuracy adjustment device. The machining accuracy adjustment device is positioned on the machining table base 6 in a first direction S1 via the bottom connecting block 102 to achieve proper clamping. Furthermore, the grinding machine also includes a worktable base 4 and a grinding wheel grinding device 5. Since the worktable base 4, the grinding wheel grinding device 5, the machining table base 6, and the clamping rotation device 7 can all be devices in the prior art, their structures will not be described in detail here. Those skilled in the art can select a suitable model or specification of device for machining the external threads of the lead screw workpiece 8. Because this grinding machine utilizes the machining accuracy adjustment device as described above, the lead screw workpiece 8 can be finely adjusted after clamping to ensure that the lead screw workpiece 8 meets the requirements of high-precision machining.

[0049] Furthermore, according to a third aspect of the present invention, a machining adjustment method is provided, which uses the machining accuracy adjustment device described above to adjust the accuracy of a lead screw workpiece 8 clamped in a grinding machine, the machining adjustment method comprising: The first step is to perform initial clamping of the lead screw workpiece 8. One end of the lead screw workpiece 8 is clamped by the clamping and rotating device 7, and the machining accuracy adjustment device moves along the first direction S1 on the track 601 of the grinding machine until the workpiece abutment part 3 presses against the other end of the lead screw workpiece 8. The second step is to use a dial indicator (not shown, a commonly used component for measuring accuracy) installed on the track 601 of the grinding machine to measure the accuracy of the lead screw workpiece 8. First, the probe of the dial indicator is placed against the upper generatrix of the lead screw workpiece 8, and the dial indicator is moved repeatedly along the first direction S1 to measure the straightness of the lead screw workpiece 8. The straightness of the upper generatrix of the lead screw workpiece 8 is adjusted by the first adjustment group.

[0050] Specifically, the dial indicator moves along the first direction S1, and the operator observes the dial indicator's error range. If the range is greater than 5 micrometers, adjustment is required using the first adjustment group. The operator needs to unlock the sliding plate 201 using the first locking component 204, allowing the sliding plate 201 to slide relative to the base 1. The unlocking process is as follows: manually operate the operating handle 205 of the first locking component 204, causing the drive shaft 207 to drive the abutment block 209 to separate from the side of the sliding plate 201. When the dial indicator moves along the clamping rotation device 7 towards the machining accuracy adjustment device, if the dial indicator reading range is greater than 5 micrometers and the reading increases, the operating handle 205 of the first fine adjustment component 203 is used to drive the driving bolt 208 of the first fine adjustment component 203 to rotate via the drive shaft 207, causing the two sliding plates 201 to move away from the clamping rotation device 7. Through the cooperation of the sliding plates 201 and the motion conversion block 202, the motion conversion block 202 is lowered, thereby driving the workpiece abutment 3 to lower its height (that is, causing the workpiece abutment 3 to move towards the top surface of the track 601), reducing the height difference between the two ends of the lead screw workpiece 8 in the second direction S2, thereby causing the dial indicator detection error range to converge to less than 5 micrometers. When the dial indicator moves along the clamping rotation device 7 toward the machining accuracy adjustment device, if the dial indicator reading range is greater than 5 micrometers and the reading gradually decreases, the operating handle 205 of the first fine adjustment component 203 is reversed, causing the two sliding plates 201 to move toward the direction closer to the clamping rotation device 7. At this time, the height of the motion conversion block 202 increases, thereby driving the workpiece abutment 3 to rise (so that the workpiece abutment 3 moves toward the top surface away from the track 601), reducing the height difference between the two ends of the lead screw workpiece 8 in the second direction S2, thereby causing the dial indicator detection error range to converge to less than 5 micrometers.

[0051] The third step is to place the probe of the dial indicator against the side generatrix of the lead screw workpiece 8, and move the dial indicator repeatedly along the first direction S1 to measure the straightness of the lead screw workpiece 8. The straightness of the side generatrix of the lead screw workpiece 8 is then adjusted by the second adjustment group.

[0052] Specifically, the dial indicator moves along the first direction S1. The operator observes the dial indicator's runout error range. If the range is greater than 5 micrometers, adjustment is required using the second adjustment group. The operator needs to use the second locking component 211 as a fixed base for movement, while simultaneously unlocking the workpiece abutment part 3. The specific operation is as follows: the two latching parts of the locking clamping block 213 are tightly fastened to the two sides of the adjusting slide rail 212 by the locking bolts. At this time, the locking clamping block 213 cannot slide relative to the adjusting slide rail 212. The locking bolts of the adjusting slider are then released, allowing the adjusting slider to move relative to the adjusting slide rail 212. If the dial indicator reading range is greater than 5 micrometers and the reading increases, the operator uses the operating handle 205 of the second fine-tuning component 210 to drive the driving bolt 208 of the second fine-tuning component 210 via the drive shaft 207. This causes the adjusting slider to move relative to the adjusting slide rail 212, and the workpiece contact part 3 moves towards the grinding wheel device 5, gradually reducing the dial indicator reading difference until the difference is less than 5 micrometers. The micro-displacement adjustment is then complete, and the adjusting slider is locked. Alternatively, if the dial indicator reading range is greater than 5 micrometers and the reading gradually decreases, the operator uses the operating handle 205 of the second fine-tuning component 210 to drive the driving bolt 208 of the second fine-tuning component 210 via the drive shaft 207. This causes the adjusting slider to move relative to the adjusting slide rail 212, and the workpiece contact part 3 moves away from the grinding wheel device 5. This gradually reduces the dial indicator reading difference until the difference is less than 5 micrometers. The micro-displacement adjustment is then complete, and the adjusting slider is locked.

[0053] The above-mentioned processing and adjustment methods can effectively reduce the geometric error of the lead screw workpiece 8 during processing, as well as the runout during rotation, ensuring the straightness of the lead screw workpiece 8, thereby improving the processing accuracy of the thread and achieving high-precision machining.

[0054] Finally, it should be noted that the above-described embodiments are merely specific implementations of this application, used to illustrate the technical solutions of this application, and not to limit them. The protection scope of this application is not limited thereto. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this application. Such modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A machining accuracy adjustment device for a grinding machine, used for adjusting the machining accuracy of one end of a lead screw workpiece, characterized in that, The machining accuracy adjustment device includes a base, an accuracy adjustment part, and a workpiece abutment part. The accuracy adjustment part includes a first adjustment group and a second adjustment group. The first adjustment group includes a sliding vertical plate and a motion conversion block. The sliding vertical plate is slidably disposed on the base along a first direction. The sides of the motion conversion block and the sliding vertical plate facing each other are respectively provided with mutually cooperating inclined friction blocks and inclined driving grooves. When the sliding vertical plate moves along the first direction, the motion conversion block moves along the second direction by being driven by the inclined friction blocks and the inclined driving grooves. The workpiece abutting part can be adjusted along a third direction and positioned on top of the first adjustment group via the second adjustment group.

2. The grinding accuracy adjustment device for a grinding machine according to claim 1, characterized in that, The first direction, the second direction, and the third direction are perpendicular to each other.

3. The grinding accuracy adjustment device for a grinding machine according to claim 1, characterized in that, The first adjustment group also includes a first fine-tuning component and a first locking component. A sliding lock block is provided at the bottom of the sliding upright plate, and a sliding lock groove for the sliding lock block to slide is provided on the base. The first fine-tuning component passes through the end of the sliding lock groove in the first direction and is connected to the sliding lock block, and the first locking component passes through the side wall of the sliding lock groove and abuts against the sliding lock block.

4. The grinding accuracy adjustment device for a grinding machine according to claim 3, characterized in that, Both the first fine-tuning component and the first locking component include an operating handle, a mounting bracket, and a drive shaft. The operating handle is disposed at one end of the drive shaft, and the drive shaft is rotatably disposed on the mounting bracket. The first fine-tuning component also includes a drive bolt that passes through the sliding lock block, and the drive bolt is connected to the drive shaft; The first locking assembly further includes an abutment block that passes through the side wall of the sliding lock groove, the abutment block being able to abut against the sliding lock block, and the abutment block being connected to the drive shaft.

5. The grinding accuracy adjustment device for a grinding machine according to claim 1, characterized in that, The second adjustment group includes an adjustment slide rail, a second fine-tuning component, and a second locking component arranged along the third direction. The bottom of the workpiece abutment portion is provided with an adjustment slider that cooperates with the adjustment slide rail. The second fine-tuning component passes through the adjustment slider and is connected to the second locking component.

6. The grinding accuracy adjustment device for a grinding machine according to claim 5, characterized in that, The adjusting slide rail is formed into an inverted trapezoidal structure. The second locking component includes a locking clamping block and a locking bolt. The locking clamping block includes a main body, a first fastening part and a second fastening part. The first fastening part and the second fastening part are disposed at the bottom of both ends of the main body. The first fastening part and the second fastening part fasten to two opposite sides of the inverted trapezoidal structure. The locking bolt passes through the main body so that the first fastening part and the second fastening part can clamp onto the adjusting slide rail.

7. The machining accuracy adjustment device for a grinding machine according to claim 1, characterized in that, The motion conversion block has a supporting power hole on the side facing the base, which is arranged along the second direction. A power output component is also provided between the base and the motion conversion block. The power output component includes a supporting power member, which passes through the motion conversion block and one end of the supporting power member is located in the supporting power hole. The supporting power component includes a supporting column, a power spring, and a power adjusting bolt. The supporting column is sleeved on the power adjusting bolt, and a power spring is provided between the supporting column and the power adjusting bolt.

8. The grinding accuracy adjustment device for a grinding machine according to claim 1, characterized in that, The inner wall of the inclined drive groove is provided with a sliding band.

9. A grinding machine, characterized in that, The grinding machine includes a worktable base, a grinding wheel device, and a machining table. The grinding wheel device and the machining table are both disposed on the worktable base. The machining table includes a machining table base, a clamping and rotating device, and a machining accuracy adjustment device for the grinding machine according to any one of claims 1 to 8. The machining accuracy adjustment device and the clamping and rotating device are disposed opposite to each other at both ends of the machining table base for clamping both ends of the lead screw workpiece. The bottom of the base of the machining accuracy adjustment device is also provided with a bottom connecting block. The machining accuracy adjustment device is disposed on the machining table base in an adjustable position along the first direction via the bottom connecting block.

10. A processing and adjustment method, characterized in that, The machining adjustment method uses the machining accuracy adjustment device for a grinding machine according to any one of claims 1 to 8 to adjust the accuracy of the lead screw workpiece clamped in the grinding machine, wherein the grinding machine includes a clamping rotation device, and the clamping rotation device and the machining accuracy adjustment device respectively clamp the two ends of the lead screw workpiece; the machining adjustment method includes: The clamping and rotating device holds one end of the lead screw workpiece, and the machining accuracy adjustment device moves along the first direction on the track of the grinding machine until the workpiece abutting part presses against the other end of the lead screw workpiece. The accuracy of the lead screw workpiece is measured using a dial indicator mounted on the track of the grinding machine. The probe of the dial indicator is placed against the upper generatrix of the lead screw workpiece, and the dial indicator is repeatedly moved along the first direction to measure the straightness of the lead screw workpiece. The straightness of the upper generatrix of the lead screw workpiece is adjusted by the first adjustment group. The probe of the dial indicator is placed against the side generatrix of the lead screw workpiece, and the dial indicator is repeatedly moved along the first direction to measure the straightness of the lead screw workpiece. The straightness of the side generatrix of the lead screw workpiece is adjusted by the second adjustment group.

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