Key groove positioning tool for shaft part machining
By using keyway positioning fixtures for machining shaft parts, the problems of inaccurate perpendicularity and position adjustment in the machining of shaft parts have been solved, achieving efficient and low-cost improvement in machining accuracy.
Patent Information
- Application Number
- CN202520142615.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-21
AI Technical Summary
In the existing technology, it is difficult to maintain the perpendicularity of shaft parts when machining holes, resulting in hole tilting and inaccurate position adjustment, which is time-consuming and labor-intensive.
A keyway positioning fixture for machining shaft parts is adopted, including a chuck, jaws, and positioning device. The workpiece is ensured to be vertical by means of chuck blocks and adjusting bolts, and the positional accuracy is improved by means of limit grooves and scale lines.
It achieves efficient and accurate workpiece clamping, improves machining accuracy, ensures the parallelism of holes and keyways, and reduces costs.
Smart Images
Figure CN223820111U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of clamping devices, in particular to a key groove positioning tool for shaft part machining. BACKGROUND
[0002] In the shaft part machining process, some parts need to be machined with holes at the end for connection. For the machining of such parts, horizontal or vertical machining can be used, that is, the workpiece is fixed horizontally for machining or placed vertically for machining. Both of these two machining methods can use traditional three-jaw chucks to clamp and fix the parts.
[0003] In actual operation, the parts are mostly put into the three-jaw chuck by workers, and then clamped by the three-jaw chuck. However, this cannot well maintain the perpendicularity of the parts, so that the parts have a certain degree of deflection, and the holes machined finally will have a certain degree of inclination. In addition, the position of the hole usually needs to match the key groove of the part outer wall, that is, there needs to be a fixed relative position between the two, so a certain amount of time needs to be spent to adjust the position of the key on the part before machining, so that the key is always in a position when each part is machined. However, this is not accurate for manual operation and is time-consuming and laborious. SUMMARY
[0004] The utility model aims at providing a key groove positioning tool for shaft part machining, which can efficiently and accurately clamp and machine the shaft parts and improve machining accuracy.
[0005] The embodiment of the utility model realizes the following technical scheme: the key groove positioning tool for shaft part machining of the utility model, including the clamping seat, the clamping jaw being arranged on the clamping seat, the workpiece being clamped in the clamping jaw, the key groove being arranged on the side edge of the workpiece, and the positioning device being arranged on the clamping seat and close to the side edge of the workpiece; the positioning device includes the fixing seat arranged on the end face of the clamping seat, the L-shaped clamping block in sliding connection with the fixing seat, and the adjusting bolt in rotational connection with the fixing seat; the upper end face of the clamping block is arranged close to the upper end face of the workpiece, the clamping block is clamped in the key groove, and the adjusting bolt is in threaded connection with the clamping block; the axial direction of the adjusting bolt is perpendicular to the axial direction of the workpiece.
[0006] Further, the fixing seat is provided with a limiting groove on one side close to the workpiece, and the clamping block is slidingly arranged in the limiting groove.
[0007] Further, the limiting groove is provided with a horizontal sliding groove, and the lower side of the clamping block is provided with a horizontal sliding strip; the sliding strip is slidingly arranged in the sliding groove.
[0008] Further, the card block is provided with horizontal scale lines, and the fixed seat is provided with indicating lines.
[0009] Further, the lower side wall of the card block is provided with horizontal support strips for placing the level.
[0010] Further, the lower side wall of the fixed seat is provided with a plurality of connecting pieces, and the connecting pieces are provided with connecting holes.
[0011] Further, the positioning device is provided with a pair of positioning devices arranged on opposite sides of the workpiece.
[0012] The key groove positioning tool for shaft part machining has the following advantages and beneficial effects: the workpiece to be machined is placed on the clamping seat during operation, the workpiece edge is preliminarily clamped by the clamping jaw (not completely clamped, and the workpiece can be moved at this time), the position of the workpiece is adjusted, the key groove on the side of the workpiece is aligned with the card block, the bolt is screwed to push the card block into the key groove of the workpiece, then whether there is a gap between the upper end surface of the card block and the inner wall of the key groove of the workpiece is observed, whether the gap between the side surface of the card block and the inner wall of the key groove of the workpiece is consistent is observed, if not, the position or angle of the workpiece is adjusted, so that the upper end side wall of the card block and the inner wall of the key groove of the workpiece are tightly fitted, and the gap between the side wall of the card block and the side wall of the key groove is consistent, so that the workpiece is completely in a vertical state by the card block, and when the end surface of the workpiece is machined, the machined hole can have better parallelism with the shaft of the workpiece, and the distance and angle precision between the machined hole and the key groove are better. The device only needs to be installed on the existing three-jaw chuck, and a new three-jaw chuck is not needed, so the cost is lower. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.
[0014] Figure 1 The structure schematic view of the key groove positioning tool for shaft part machining provided by the embodiments of the present application from a perspective when in use;
[0015] Figure 2 The structure schematic view of the key groove positioning tool for shaft part machining provided by the embodiments of the present application from a perspective when in use;
[0016] Figure 3 A structure schematic view of the positioning device part provided by the embodiment of the present application is shown in the figure.
[0017] Figure 4 A structure schematic view of the fixing seat part provided by the embodiment of the present application is shown in the figure.
[0018] Figure 5 A structure schematic view of the clamping block part provided by the embodiment of the present application is shown in the figure.
[0019] Figure 6 A structure schematic view of the workpiece provided by the embodiment of the present application is shown in the figure.
[0020] Icon: 11-clamping seat, 12-clamping jaw, 13-workpiece, 14-key groove, 20-positioning device, 21-fixing seat, 22-limiting groove, 23-sliding groove, 24-connecting plate, 25-connecting bolt, 26-clamping block, 27-sliding bar, 28-adjusting bolt, 29-supporting strip, 210-scale line, 211-indication line. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.
[0023] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0024] In the description of the utility model, it needs to explain, if appearing the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or positional relationship is based on the orientation or positional relationship shown in the drawing, or is the orientation or positional relationship of the product of the application when using the usual placement, is only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0025] In the description of the utility model, it also needs to explain that, unless there is an explicit provision and limitation, if the term "set", "install", "connect", "connect" appears, it should be understood broadly, for example, it can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0026] Embodiment
[0027] The following is further illustrated in conjunction with specific embodiments, such as the drawings Figure 1 -Appendix Figure 6As shown, the keyway positioning tool for shaft part machining of the embodiment comprises a clamping seat 11, a clamping jaw 12 arranged on the clamping seat 11, a workpiece 13 clamped in the clamping jaw 12, a keyway 14 arranged on the side of the workpiece 13, and a positioning device 20 arranged on the clamping seat 11 and close to the side of the workpiece 13. The positioning device 20 comprises a fixing seat 21 arranged on the end face of the clamping seat 11, an L-shaped clamping block 26 in sliding connection with the fixing seat 21, and an adjusting bolt 28 in rotational connection with the fixing seat 21. The upper end face of the clamping block 26 is arranged close to the upper end face of the workpiece 13, the clamping block 26 is clamped in the keyway 14, and the adjusting bolt 28 is in threaded connection with the clamping block 26. The axial direction of the adjusting bolt 28 is perpendicular to the axial direction of the workpiece 13. Specifically, in operation, the workpiece 13 to be machined is placed on the clamping seat 11, the clamping jaw 12 is used to preliminarily clamp the edge of the workpiece 13 (not completely clamped, at this time the workpiece 13 can be moved), the position of the workpiece 13 is adjusted so that the keyway 14 on the side of the workpiece 13 is aligned with the clamping block 26, the clamping block 26 is pushed into the keyway 14 of the workpiece 13 by screwing the bolt, then it is observed whether there is a gap between the upper end face of the clamping block 26 and the inner wall of the keyway 14 of the workpiece 13, and whether the gap between the side face of the clamping block 26 and the inner wall of the keyway 14 of the workpiece 13 is consistent, if not, the position or angle of the workpiece 13 is adjusted so that the upper end side wall of the clamping block 26 is tightly fitted with the inner wall of the keyway 14 of the workpiece 13, and the gap between the side wall of the clamping block 26 and the side wall of the keyway 14 is consistent, so that the workpiece 13 is ensured to be in a completely vertical state by the clamping block 26, at this time when the end face of the workpiece 13 is machined, the hole machined has better parallelism with the shaft of the workpiece 13. Moreover, the device only needs to be installed on the existing three-jaw chuck, without the need to replace a new three-jaw chuck, thus the cost is lower.
[0028] The fixing seat 21 in the embodiment is provided with a limiting groove 22 on the side close to the workpiece 13, and the clamping block 26 is slidingly arranged in the limiting groove 22. A sliding groove 23 horizontally arranged is arranged in the limiting groove 22, and a sliding strip 27 horizontally arranged is arranged on the lower side of the clamping block 26. The sliding strip 27 is slidingly arranged in the sliding groove 23. Specifically, through the cooperation of the limiting groove 22 and the clamping block 26 and the cooperation of the sliding strip 27 and the sliding groove 23, the movement of the clamping block 26 is more linear and stable, and the clamping block 26 is prevented from being greatly inclined.
[0029] The clamping block 26 in the embodiment is provided with a horizontally arranged scale line 210, and the fixing seat 21 is provided with an indicating line 211 corresponding to the scale line 210. Specifically, through the scale line 210 and the indicating line 211, it can be roughly known whether the clamping block 26 is at a proper position, and the clamping block 26 can be moved to a proper position first, and then the workpiece 13 is adjusted.
[0030] The lower side wall of the clamping block 26 in the embodiment is provided with a support strip 29 arranged horizontally, which is used to place a level meter.
[0031] The lower side wall of the fixing seat 21 in the embodiment is provided with a plurality of connecting pieces 24, which are provided with connecting holes; the connecting pieces 24 are connected with the clamping seat 11 through connecting bolts 25.
[0032] The positioning device 20 in the embodiment is provided with a pair, and the pair of positioning devices 20 are arranged on the opposite sides of the workpiece 13. Specifically, the outer wall of the workpiece 13 is usually provided with a pair of key grooves 14, so that a pair of positioning devices 20 can be arranged to position the workpiece 13. Although the pair of positioning devices 20 increases the adjustment time, the perpendicularity of the workpiece 13 is better.
[0033] In summary, the key groove positioning tool for shaft part machining in the embodiment is used to place the workpiece 13 to be machined on the clamping seat 11, use the clamping jaw 12 to preliminarily clamp the edge of the workpiece 13 (not completely clamped, at this time the workpiece 13 can be moved), adjust the position of the workpiece 13, so that the key groove 14 on the side of the workpiece 13 is aligned with the clamping block 26, twist the bolt to push the clamping block 26 into the key groove 14 of the workpiece 13, then observe whether there is a gap between the upper end surface of the clamping block 26 and the inner wall of the key groove 14 of the workpiece 13, and whether the gap between the side wall of the clamping block 26 and the inner wall of the key groove 14 of the workpiece 13 is consistent, if not, adjust the position or angle of the workpiece 13, so that the upper end side wall of the clamping block 26 and the inner wall of the key groove 14 of the workpiece 13 are tightly fitted, and the gap between the side wall of the clamping block 26 and the side wall of the key groove 14 is consistent, so that the workpiece 13 is ensured to be in a vertical state through the clamping block 26, at this time, when the end surface of the workpiece 13 is machined, the hole machined has better parallelism with the shaft of the workpiece 13. Moreover, the device only needs to be installed on the existing three-jaw chuck, without the need to replace the new three-jaw chuck, so the cost is lower.
[0034] The above is only a preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A keyway positioning fixture for machining shaft-type parts, comprising a retainer (11), jaws (12) disposed on the retainer (11), a workpiece (13) held in the jaws (12), and a keyway (14) disposed on the side of the workpiece (13), characterized in that: The positioning device (20) is arranged on the clamping seat (11) and close to the side of the workpiece (13). The positioning device (20) comprises a fixed seat (21) arranged on the end face of the clamping seat (11), an L-shaped clamping block (26) in sliding connection with the fixed seat (21), and an adjusting bolt (28) in rotational connection with the fixed seat (21). The upper end face of the clamping block (26) is arranged close to the upper end face of the workpiece (13), the clamping block (26) is clamped in the key groove (14), and the adjusting bolt (28) is in threaded connection with the clamping block (26); the axial direction of the adjusting bolt (28) is perpendicular to the axial direction of the workpiece (13).
2. The keyway positioning tool for machining shaft parts according to claim 1, characterized in that: The fixed seat (21) is provided with a limiting groove (22) on the side close to the workpiece (13), and the clamping block (26) is arranged in sliding connection in the limiting groove (22).
3. The keyway positioning tool for shaft part machining according to claim 2, characterized in that: A sliding groove (23) is arranged horizontally in the limiting groove (22), and a sliding strip (27) is arranged horizontally on the lower side of the clamping block (26); the sliding strip (27) is arranged in sliding connection in the sliding groove (23).
4. The keyway positioning tool for shaft part machining according to claim 1, characterized in that: A scale line (210) is arranged horizontally on the clamping block (26), and an indicating line (211) is arranged on the fixed seat (21); the indicating line (211) corresponds to the scale line (210).
5. The keyway positioning tool for shaft part machining according to claim 1, characterized in that: A support strip (29) is arranged horizontally on the lower side wall of the clamping block (26), and the support strip (29) is used to place a level.
6. The keyway positioning tool for shaft part machining according to claim 1, characterized in that: A plurality of connecting pieces (24) are arranged on the lower side wall of the fixed seat (21), and the connecting pieces (24) are provided with connecting holes; the connecting pieces (24) are connected with the clamping seat (11) through connecting bolts (25).
7. The keyway positioning tool for machining shaft parts according to any one of claims 1 to 6, characterized in that: The positioning device (20) is arranged in pairs, and the positioning devices (20) are arranged on the opposite sides of the workpiece (13).