Machining tool for shaft parts with different lengths

Abstract

The invention relates to the technical field of part machining, in particular to a machining tool for shaft parts of different lengths, which comprises a bottom plate arranged on a machining table, a positioning cone used for being matched with the bottom end of a shaft workpiece in an inserted connection mode is arranged on the bottom plate, and a clamping assembly used for clamping the high position of the shaft workpiece is arranged above the positioning cone. A height adjusting assembly used for adjusting the height is arranged between the clamping assembly and the bottom plate. The clamping device has the advantage of being suitable for stably clamping shaft parts with different lengths.

Description

Technical Field

[0001] The present application relates to the technical field of parts processing, and in particular to a tool for processing shaft parts of different lengths. Background Art

[0002] A fixture is a piece of equipment or tool specifically designed to precisely position and securely hold a workpiece during machining. The primary purpose of this fixture is to ensure that the workpiece maintains an accurate relative position to the machine tool and cutting tools during machining, thereby achieving high-precision and efficient machining.

[0003] The related technology discloses a tooling for processing shaft parts for a vertical machine tool, which includes a base plate arranged on a processing table, and multiple clamping blocks slidingly arranged on the base plate. The shaft workpiece is placed vertically between the clamping blocks, and then the clamping blocks are brought close to each other and clamped at the bottom of the shaft workpiece.

[0004] Since the above-mentioned tooling is clamped near the bottom of the shaft workpiece, it is only suitable for clamping shaft workpieces with shorter lengths. If a shaft workpiece with longer lengths is to be clamped, the center of gravity of the shaft workpiece will increase, and it will be unstable if it is clamped at a single point at the bottom. The force applied during top processing will cause shaking, and the processing quality will be significantly reduced. Therefore, the above-mentioned processing tooling has poor applicability to shaft workpieces of different lengths and has obvious shortcomings. Summary of the Invention

[0005] In order to be suitable for stable clamping of shaft parts of different lengths, the present application provides a tool for processing shaft parts of different lengths.

[0006] The present application provides a tooling for machining shaft parts of different lengths using the following technical solutions: A tool for processing shaft parts of different lengths, including a base plate placed on a processing table, a positioning cone arranged on the base plate for plugging and cooperating with the bottom end of the shaft workpiece, a clamping assembly arranged above the positioning cone for clamping the shaft workpiece at a high point, and a height adjustment assembly arranged between the clamping assembly and the base plate for adjusting the height.

[0007] By adopting the above technical solution, the height of the clamping component is pre-adjusted by raising the component, and then the bottom end of the shaft workpiece is plugged into the positioning cone, and then clamped at a high point of the shaft part by the clamping component, thereby improving the stability of the overall clamping of the shaft part.

[0008] Optionally, the height adjustment assembly includes a plurality of pads stacked vertically on the base plate, and two vertically adjacent pads are detachably connected.

[0009] By adopting the above technical solution, multiple pads are stacked to adjust the height of the clamping assembly, and the adjustment process is simple to operate and easy to implement.

[0010] Optionally, the clamping assembly includes two clamping blocks slidably arranged on the highest pad, a sliding groove is provided on the clamping block along its sliding direction, a pre-tightening bolt is threaded on the highest pad, the pre-tightening bolt is located in the sliding groove and is used to tighten the top of the clamping block, and the two clamping blocks are connected by a fastening bolt.

[0011] By adopting the above technical solution, when clamping shaft parts at a high point, manually bring the two clamping blocks together and slightly tighten the pre-tightening bolts. Then check the circular runout. If the test is normal, tighten the fastening bolts and pre-tightening bolts, making the clamping process simple to operate.

[0012] Optionally, clamping grooves for clamping shaft parts are arranged on the opposite sides and the opposite sides of the two clamping blocks, and the sizes of the clamping grooves on the opposite sides and the opposite sides are different.

[0013] By adopting the above technical solution, the clamping groove improves the clamping effect of shaft parts.

[0014] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0015] By adopting this technical solution, a worker manually turns the bidirectional screw, bringing the two moving blocks closer together. The connecting rod pushes the end block on which it is attached toward the vertical plate, which in turn pushes the side sliders to slide diagonally. The end block on the vertical plate then pushes the support plate upward, which in turn drives the clamping assembly upward, thereby achieving height adjustment. Once adjustment is complete, the bidirectional screw is restricted by a locking member to prevent circumferential rotation.

[0016] Optionally, the locking member includes a gear fixedly mounted on the bidirectional screw rod and a limiting belt arranged on both sides of the bidirectional screw rod, the limiting belt is provided with a plurality of tooth blocks for engaging with the gear, and the tooth blocks are magnetically attracted to the gear.

[0017] With this technical solution, after height adjustment, workers manually pull the limiting belt, wrapping it circumferentially around the gear. The multiple tooth blocks on the limiting belt are magnetically engaged in the gear's tooth grooves. The two sets of limiting belts and tooth blocks work together to lock the bidirectional lead screw in both directions, making the locking process simple to operate.

[0018] Optionally, a pull belt is arranged on the side of the limiting belt opposite to the tooth block.

[0019] By adopting the above technical solution, the pull belt makes it convenient for workers to manually pull the limiting belt, thereby facilitating the disengagement of the tooth block from the tooth groove of the gear, thereby facilitating the release of the circumferential locking effect on the bidirectional screw rod.

[0020] Optionally, the end block and the side slider are coated with polytetrafluoroethylene.

[0021] By adopting the above technical solution, since the friction coefficient of polytetrafluoroethylene is relatively small, the smoothness of the relative sliding of the end block and the side slider is improved.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The height adjustment component pre-adjusts the height of the clamping component, then the bottom end of the shaft workpiece is plugged into the positioning cone, and then clamped at the height of the shaft part through the clamping component, thereby improving the stability of the overall clamping of the shaft part; 2. A worker manually turns the bidirectional screw, bringing the two moving blocks closer together. The connecting rod pushes the end block toward the vertical plate, which in turn pushes the side sliders to slide diagonally. The end block on the vertical plate pushes the load plate upward, which in turn drives the clamping assembly upward, thus achieving height adjustment. Once adjustment is complete, the bidirectional screw is restricted by a locking member to prevent circumferential rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of Example 1 of the present application.

[0024] Figure 2 It is a cross-sectional view showing the positional relationship between the base plate and the positioning cone in Example 1 of the present application.

[0025] Figure 3 It is a structural diagram of Example 2 of the present application.

[0026] Figure 4 It is a schematic diagram of the positional relationship between the side slide, the bidirectional screw rod and the moving block in Example 2 of the present application.

[0027] Figure 5 It is an exploded view of the gears, bidirectional screw rods, and limiting belts in the embodiment of the present application.

[0028] Explanation of the accompanying reference numerals: 1. Base plate; 2. Positioning cone; 3. Pad; 4. Clamping block; 41. Clamping groove; 42. Slide groove; 5. Pre-tightening bolt; 6. Fastening bolt; 71. Bidirectional screw rod; 72. Moving block; 73. Vertical plate; 74. Load-bearing plate; 75. End block; 76. Side slider; 77. Connecting rod; 81. Gear; 82. Limiting belt; 83. Tooth block; 84. Pull belt. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] The embodiment of the present application discloses a tool for processing shaft parts of different lengths.

[0031] Example 1 Reference Figure 1 and Figure 2 The tooling for machining shaft parts of varying lengths consists of a base plate 1 bolted horizontally to a machining table. A positioning cone 2, threaded onto the base plate for engaging with the bottom end of the shaft workpiece, is threaded onto the base plate 1. A clamping assembly for holding the shaft workpiece at a higher point is located above the positioning cone 2. A height adjustment assembly is located between the clamping assembly and the base plate 1 for adjusting the height.

[0032] Reference Figure 1 and Figure 2 The height adjustment component includes multiple pads 3 stacked vertically on the base plate 1. The height of the pads 3 can be set according to actual requirements. The lowest pad 3 and the base plate 1 and the two vertically adjacent pads 3 are detachably connected by bolts.

[0033] Workers select multiple appropriate spacers 3 based on the length of the shaft workpiece and stack them in sequence to adjust the height of the clamping assembly. The clamping assembly is clamped at the top of the shaft workpiece, and the positioning cone 2 is used to insert and position the bottom end of the shaft part, improving the stability of the overall clamping of the shaft workpiece.

[0034] Reference Figure 1 The clamping assembly includes two clamping blocks 4 slidably arranged on the highest pad 3. A sliding groove 42 is provided on the clamping block 4 along its sliding direction. A pre-tightening bolt 5 is threadedly connected to the highest pad 3. The pre-tightening bolt 5 is located in the sliding groove 42 and is used to tighten the top of the clamping block 4. The two clamping blocks 4 are connected by a fastening bolt 6.

[0035] Reference Figure 1 During clamping, the worker manually brings the two clamping blocks 4 closer together and slightly tightens the pre-tightening bolts 5. Then, the circular runout of the shaft workpiece is detected. If the detection is normal, the fastening bolts 6 and pre-tightening bolts 5 are tightened in sequence.

[0036] Reference Figure 1The opposite sides and the back sides of the two clamping blocks 4 are both provided with clamping grooves 41 for clamping shaft parts, and the clamping grooves 41 improve the clamping effect of the shaft parts.

[0037] In addition, the sizes of the clamping grooves 41 on the opposite sides and the back sides are different, so that the clamping block 4 is suitable for clamping shaft workpieces of different sizes, further improving the applicability of the clamping block 4.

[0038] The working principle of Example 1 is as follows: A worker selects multiple appropriate spacers 3 based on the length of the shaft workpiece and stacks them sequentially to adjust the height of the clamping block 4. During clamping, the bottom end of the shaft workpiece is inserted into the positioning cone 2. The two clamping blocks 4 are then manually brought together and the preload bolts 5 are lightly tightened. The shaft workpiece is then tested for circular runout. If the test is normal, the clamping bolts 6 and preload bolts 5 are then tightened sequentially, making the operation convenient.

[0039] Example 2 Reference Figure 3 and Figure 4 The difference between this embodiment and embodiment 1 is that the height adjustment component includes a bidirectional screw rod 71 mounted horizontally on the base plate 1, and the two sections of the bidirectional screw rod 71 with opposite spiral directions are both threadedly connected to the moving block 72.

[0040] Reference Figure 3 and Figure 4 The height adjustment assembly also includes two lifting parts symmetrically distributed about the bidirectional screw rod 71. The lifting parts include a vertical plate 73 bolted to the base plate 1 and a supporting plate 74 vertically slidably arranged on the vertical plate 73. In this embodiment, the clamping block 4 is located on the supporting plate 74.

[0041] Reference Figure 3 and Figure 4 Two end blocks 75 are arranged below the supporting plate 74, and multiple side sliders 76 are arranged between the two end blocks 75 and arranged in a row. The end blocks 75 and the side sliders 76, as well as the two adjacent side sliders 76, are all in close contact with each other, and the close contact surfaces are inclined from top to bottom toward the corresponding vertical plate 73.

[0042] The end block 75 and the side slider 76, as well as the two adjacent side sliders 76, are all slidably matched along the inclined direction of the close-fitting surface and are coated with polytetrafluoroethylene. The end block 75 closer to the vertical plate 73 is bolted to the bearing plate 74, and the end block 75 farther from the vertical plate 73 is hinged with a connecting rod 77 between it and the two moving blocks 72.

[0043] Reference Figure 3 and Figure 4The worker manually turns the bidirectional screw rod 71, and the two moving blocks 72 move closer to each other, so that the connecting rod 77 pushes the end block 75 close to the corresponding vertical plate 73, and the end block 75 pushes each side slider 76 to slide obliquely in turn, so that the end block 75 on the vertical plate 73 pushes the supporting plate 74 to move upward, and the supporting plate 74 drives the clamping block 4 to move higher, thereby realizing height adjustment.

[0044] Reference Figure 4 and Figure 5 In order to lock the height of the clamping block 4 after the height adjustment is completed, the height adjustment component also includes a locking member for limiting the rotation of the bidirectional screw rod 71. The locking member includes a gear 81 fixedly mounted on the bidirectional screw rod 71, and a limiting belt 82 bolted to both sides of the bidirectional screw rod 71. The limiting belt 82 is bolted with a plurality of tooth blocks 83 for engaging with the gear 81, and the tooth blocks 83 are magnetically attracted to the gear 81.

[0045] Reference Figure 4 and Figure 5 After the height adjustment is completed, the worker manually pulls the limiting belt 82 so that the limiting belt 82 is circumferentially wrapped around the gear 81. The multiple tooth blocks 83 on the limiting belt 82 are firmly engaged in the tooth grooves on the gear 81 through magnetic attraction. The two sets of limiting belts 82 and tooth blocks 83 cooperate to realize bidirectional locking of the bidirectional screw rod 71.

[0046] Reference Figure 1 A drawstring 84 is bonded to one side of the limiting belt 82 opposite to the tooth block 83 . The drawstring 84 facilitates workers to pull the limiting belt 82 , thereby facilitating the separation of each tooth block 83 from the tooth groove on the gear 81 .

[0047] The implementation principle of Example 2 is as follows: a worker manually turns the bidirectional screw 71, and the two moving blocks 72 approach each other, thereby pushing the end block 75 on the connecting rod 77 to approach the corresponding vertical plate 73. The end block 75 pushes each side slider 76 to slide obliquely in sequence, thereby pushing the end block 75 on the vertical plate 73 to push the supporting plate 74 upward, and the supporting plate 74 drives the clamping block 4 to move upward, thereby achieving height adjustment. After the height adjustment is completed, the worker manually pulls the limiting belt 82, so that the limiting belt 82 is circumferentially wound around the gear 81. The multiple tooth blocks 83 on the limiting belt 82 are firmly engaged in the tooth grooves on the gear 81 through magnetic attraction. The two sets of limiting belts 82 and tooth blocks 83 cooperate to achieve bidirectional locking of the bidirectional screw 71.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A tool for machining shaft parts of different lengths, comprising a base plate (1) placed on a machining table, characterized in that: A positioning cone (2) for plugging and engaging with the bottom end of a shaft workpiece is arranged on the bottom plate (1); a clamping assembly for clamping the shaft workpiece at a high position is arranged above the positioning cone (2); and a height adjustment assembly for adjusting the height is arranged between the clamping assembly and the bottom plate (1).

2. The tooling for machining shaft parts of different lengths according to claim 1, characterized in that: The height adjustment assembly comprises a plurality of pads (3) vertically stacked on a base plate (1), and two vertically adjacent pads (3) are detachably connected.

3. The tooling for machining shaft parts of different lengths according to claim 2, characterized in that: The clamping assembly comprises two clamping blocks (4) slidably arranged on the highest pad (3), a sliding groove (42) is provided on the clamping block (4) along its sliding direction, a pre-tightening bolt (5) is threadedly connected to the highest pad (3), the pre-tightening bolt (5) is located in the sliding groove (42) and is used to press the top of the clamping block (4), and the two clamping blocks (4) are connected by a fastening bolt (6).

4. The tooling for machining shaft parts of different lengths according to claim 3 is characterized in that: Clamping grooves (41) for clamping shaft parts are arranged on the opposite sides and the opposite sides of the two clamping blocks (4), and the sizes of the clamping grooves (41) on the opposite sides and the opposite sides are different.

5. The tooling for machining shaft parts of different lengths according to claim 1 is characterized in that: The height adjustment assembly comprises a bidirectional screw rod (71) rotatably mounted on the bottom plate (1), a locking member for limiting the rotation of the bidirectional screw rod (71), and two sections of the bidirectional screw rod (71) with opposite spiral directions are both threadedly connected to a moving block (72); and further comprises two lifting members symmetrically arranged about the bidirectional screw rod (71), the lifting members comprising a vertical stand (73), a bearing plate (74) vertically slidably arranged on the stand (73), and the clamping assembly is located on the bearing plate (74); two end blocks (73) are arranged below the bearing plate (74). 5), a plurality of side sliders (76) are arranged between the two end blocks (75), the end blocks (75) and the side sliders (76), and the two adjacent side sliders (76) are all in close contact with each other, and the close contact surfaces are arranged tilted from top to bottom toward the vertical plate (73), the end blocks (75) and the side sliders (76), and the two adjacent side sliders (76) are all slidably matched, the end blocks (75) closer to the vertical plate (73) are connected to the bearing plate (74), and the end blocks (75) farther from the vertical plate (73) are hinged with connecting rods (77) and the two moving blocks (72).

6. The tooling for machining shaft parts of different lengths according to claim 5, characterized in that: The locking member comprises a gear (81) fixedly sleeved on a bidirectional screw rod (71), and a limiting belt (82) arranged on both sides of the bidirectional screw rod (71); a plurality of tooth blocks (83) for meshing with the gear (81) are arranged on the limiting belt (82); and the tooth blocks (83) and the gear (81) are magnetically attracted to each other.

7. The tooling for machining shaft parts of different lengths according to claim 6, characterized in that: A pull belt (84) is arranged on one side of the position-limiting belt (82) opposite to the tooth block (83).

8. The tooling for machining shaft parts of different lengths according to claim 5, characterized in that: The end block (75) and the side slider (76) are both coated with polytetrafluoroethylene.

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