A cross shaft milling keyway processing clamp

Abstract

This utility model relates to the field of milling machine technology. A horizontal axis keyway milling fixture includes a machine tool, a spindle box on the machine tool, a main drive shaft inside the spindle box, several milling cutters mounted on the main drive shaft, an upper support plate slidably mounted on the machine tool, and a fixture assembly on the upper support plate. The fixture assembly includes a positioning block fixed in the middle of the upper support plate, locking wrenches symmetrically arranged on both sides of the upper support plate, a pressure block pressing on the workpiece in the middle of the upper support plate, and an adjusting top block on the rear side of the upper support plate. This utility model provides a horizontal axis keyway milling fixture that can process multiple workpieces at once, is easy to operate, has good clamping effect, and can restrict the workpiece from multiple directions, meeting higher production demands. It solves the technical problems of existing milling machine fixtures having a simple structure, only able to process one workpiece at a time, resulting in low processing efficiency and easy workpiece movement during processing, thus failing to meet higher production requirements.

Description

Technical Field

[0001] This utility model relates to the field of milling machine technology, and in particular to a fixture for milling keyways on a horizontal axis. Background Technology

[0002] With economic development and rapid industrial growth, milling machines, primarily referring to machine tools that use milling cutters to machine various surfaces of workpieces, are characterized by their rotary motion as the main motion and the movement of the workpiece and cutter as the feed motion. They can machine planes, grooves, various curved surfaces, gears, and more.

[0003] The fixture structure on current milling machines is relatively simple, and it can usually only clamp a single workpiece. This means that only one workpiece can be processed at a time, and the workpiece is prone to move during processing, affecting the results after milling. Therefore, there is a need for improvement. Utility Model Content

[0004] This utility model provides a horizontal axis keyway milling fixture that can process multiple workpieces at once, is easy to operate, has a good clamping effect, and can restrict the workpiece from multiple directions, thus meeting higher production requirements. It solves the technical problems of existing milling machine fixtures, which have a single structure, can only process one workpiece at a time, have low processing efficiency, and are prone to workpiece movement during processing, affecting processing quality and failing to meet higher production requirements.

[0005] The above-mentioned technical problem of this utility model is solved by the following technical solution: A horizontal axis keyway milling fixture includes a machine tool, a spindle box is provided on the front side of the machine tool, a main drive shaft extending outward is provided in the spindle box, a plurality of milling cutters are provided on the main drive shaft, an upper support plate is slidably provided on the machine tool, a fixture assembly for clamping the workpiece is provided on the upper support plate, the fixture assembly includes a positioning block fixed in the middle of the upper support plate, locking wrenches are symmetrically provided on both sides of the upper support plate, a pressure block pressing on the workpiece is provided in the middle of the upper support plate, and an adjusting top block is provided on the rear side of the upper support plate; the workpiece is positioned in the inner position by the positioning block, the adjusting top block on the rear side presses the workpiece according to the workpiece size, and the locking wrenches on both sides and the pressure block on the top lock and press the workpiece firmly. The main drive shaft of this invention is equipped with two milling cutters, which can simultaneously mill two workpieces. During milling, the lower support plate moves back and forth. Before milling, the workpiece is clamped by a clamping assembly, with the inner side of the workpiece abutting against the surfaces of the front and rear positioning blocks. The position of the rear adjusting block is adjusted according to the workpiece size to push it against the rear end of the workpiece. Then, a locking wrench is used to push it against the side of the workpiece. Finally, a clamping wrench is used to press the pressure block against the upper surface of the workpiece, thus completing the clamping of the workpiece. This invention can limit the workpiece in multiple directions to ensure the quality of milling.

[0006] Preferably, the positioning block includes a front positioning block and several rear positioning blocks, with the rear positioning blocks fixed vertically at intervals on the upper support plate. The positioning block in this invention includes a front positioning block at the very front and several rear positioning blocks on the rear sides. The front end of the workpiece is attached to the front positioning block. Different workpiece sizes and lengths will be attached to different rear positioning block surfaces, making it suitable for positioning various types of workpieces.

[0007] Preferably, the clamping assembly further includes locking blocks fixed to both sides of the upper support plate, with a locking wrench passing through the locking blocks and pressing against the workpiece surface. The locking wrench and the locking blocks are threaded together. The outer surface of the workpiece is fixed by the locking wrench, which can prevent the workpiece from moving outward during milling.

[0008] Preferably, the clamping assembly further includes a clamping wrench rotatably mounted in the middle of the upper support plate, with a clamping block fitted onto the clamping wrench, and the clamping block and the clamping wrench being threaded together. Before milling the groove, the workpiece is clamped by the clamping assembly, and the clamping wrench is used to press the clamping block onto the upper surface of the workpiece, which can limit the top of the workpiece and prevent the workpiece from moving up and down during the milling process.

[0009] Preferably, the clamping assembly further includes a slide rail formed on the surface of the upper support plate, an adjusting block slidably mounted in the slide rail, and a clamping device provided on the rear side of the adjusting block. The adjusting block can move back and forth to accommodate workpieces of different sizes and lengths.

[0010] Preferably, the clamping device is a hydraulic cylinder system, with the hydraulic rod pressing against the rear side of the adjusting top block. Before milling the groove, the workpiece is clamped by the clamping assembly, with the inner side of the workpiece abutting against the surfaces of the front and rear positioning blocks. According to the workpiece size, the hydraulic rod pushes the adjusting top block to press against the rear end of the workpiece, then a locking wrench is used to press against the side of the workpiece, and finally a clamping wrench is used to press the pressure block against the upper surface of the workpiece, thus completing the clamping of the workpiece and allowing for multi-directional limiting of the workpiece.

[0011] Preferably, the machine tool has a lower support plate that slides on it, and a first drive motor connected to the lower support plate is provided on the machine tool. An upper support plate is slidably mounted on the lower support plate. The first drive motor can drive the lower support plate to move back and forth, and the lower support plate moves back and forth during milling.

[0012] Preferably, the machine tool is equipped with a second drive motor connected to the upper support plate. The second drive motor can move the upper support plate in the left and right directions, which facilitates positioning before milling.

[0013] Preferably, a main motor connected to the main drive shaft is provided on one side of the spindle box. The main motor is used to drive the rotation of the main drive shaft and the milling cutter.

[0014] Therefore, the horizontal shaft keyway milling fixture of this utility model has the following advantages: it can process multiple workpieces at a time, is easy to operate, has a good clamping effect, can restrict the workpiece from multiple directions, and can meet higher production requirements. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a horizontal axis milling keyway machining fixture according to this utility model.

[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0017] Figure 3 yes Figure 1 A top-view structural diagram.

[0018] Figure 4 yes Figure 3 Enlarged view of section B in the middle.

[0019] In the figure, machine tool 1, lower support plate 2, upper support plate 3, first drive motor 4, second drive motor 5, front positioning block 6, rear positioning block 7, locking wrench 8, clamping wrench 9, pressure block 10, slide rail 11, adjusting top block 12, hydraulic cylinder 13, spindle box 14, main motor 15, main drive shaft 16, and milling cutter 17. Detailed Implementation

[0020] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0021] Example:

[0022] like Figure 1 and 2 As shown in Figures 3 and 4, a keyway milling fixture for horizontal shafts includes a machine tool 1. A lower support plate 2 that can slide back and forth is mounted on the right side of the machine tool 1, and an upper support plate 3 that can slide left and right is mounted on the lower support plate 2. A first drive motor 4 and a second drive motor 5 are mounted on the machine tool 1 and are respectively connected to the lower support plate 2 and the upper support plate 3.

[0023] The upper support plate 3 is equipped with a clamping assembly for clamping the workpiece; the clamping assembly includes a positioning block fixedly installed in the middle of the upper support plate 3, the positioning block includes a front positioning block 6 on the front side and several rear positioning blocks 7 on the rear side, and the rear positioning blocks are fixed vertically at intervals on the upper support plate 3.

[0024] The clamping assembly also includes four locking blocks fixed on both sides of the upper support plate 3. A locking wrench 8 is provided through the locking block, and the locking wrench 8 is threadedly engaged with the locking block.

[0025] The clamping assembly also includes a clamping wrench 9 rotatably mounted in the middle of the upper support plate 3, with a pressure block 10 fitted on the clamping wrench 9, and the pressure block 10 and the clamping wrench 9 being threaded together.

[0026] The clamping assembly also includes a slide 11 formed on the rear surface of the upper support plate 3, an adjusting top block 12 is slidably installed in the slide 11, and a tightening device is installed on the rear side of the adjusting top block 12.

[0027] The clamping device includes a hydraulic cylinder 13 fixed to the rear side of the upper support plate 3, and the hydraulic rod inside the hydraulic cylinder 13 abuts against the rear side of the adjusting top block 12; the workpiece is positioned on the inner side by the positioning block, and the adjusting top block 12 on the rear side holds the workpiece in place according to the workpiece size, and the locking wrenches 8 on both sides and the pressure block 10 on the top lock and press the workpiece firmly.

[0028] A spindle box 14 is installed on the left side of the machine tool 1. A main motor 15 is installed on the left side of the spindle box 14. A main drive shaft 16 connected to the main motor 15 is installed inside the spindle box 14. The main drive shaft 16 extends to the outside and two milling cutters 17 are installed on the main drive shaft 16.

[0029] In this utility model, the first drive motor 4 and the second drive motor 5 drive the lower support plate 2 to move back and forth and the upper support plate 3 to move left and right, respectively, for alignment before milling and forward and backward movement in the milling groove.

[0030] The main drive shaft 16 of this utility model is equipped with two milling cutters 17, which can simultaneously perform milling on two workpieces. During milling, the lower support plate 2 moves back and forth.

[0031] Before milling the groove, the workpiece is clamped by the clamping assembly. The inner side of the workpiece rests against the surface of the front positioning block 6 and the rear positioning block 7. According to the workpiece size, the hydraulic rod pushes the adjusting top block 12 to press against the rear end of the workpiece. Then, the locking wrench 8 is used to press against the side of the workpiece. Finally, the clamping wrench 9 is used to press the pressure block 10 onto the upper surface of the workpiece, thus completing the clamping of the workpiece.

[0032] The specific embodiments described herein are merely illustrative of the concept of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A keyway milling fixture for horizontal shafts, comprising a machine tool, a spindle box located on the front side of the machine tool, a main drive shaft extending outwardly within the spindle box, and a plurality of milling cutters mounted on the main drive shaft, characterized in that: The machine tool is equipped with an upper support plate that slides on it. The upper support plate is equipped with a clamping assembly for holding the workpiece. The clamping assembly includes a positioning block fixed in the middle of the upper support plate, several locking wrenches symmetrically arranged on both sides of the upper support plate, a pressure block pressing on the workpiece in the middle of the upper support plate, and an adjusting top block on the rear side of the upper support plate. The workpiece is positioned on the inner side by the positioning block, the adjusting top block on the rear side holds the workpiece in place according to the workpiece size, and the locking wrenches on both sides and the pressure block on the top lock and press the workpiece firmly.

2. The keyway milling fixture according to claim 1, characterized in that: The positioning block includes a front positioning block and several rear positioning blocks, with the rear positioning blocks fixed vertically at intervals on the upper support plate.

3. The keyway milling fixture according to claim 1, characterized in that: The clamping assembly also includes locking blocks fixed on both sides of the upper support plate, with a locking wrench passing through the locking block and pressing against the workpiece surface. The locking wrench and the locking block are connected by threads.

4. A keyway milling fixture according to claim 1, characterized in that: The clamping assembly also includes a clamping wrench rotatably mounted in the middle of the upper support plate, with a clamping block fitted onto the clamping wrench, and the clamping block and the clamping wrench being threaded together.

5. A keyway milling fixture according to claim 1, characterized in that: The clamp assembly also includes a slide rail formed on the surface of the upper support plate, an adjusting top block slidably installed in the slide rail, and a tightening device provided on the rear side of the adjusting top block.

6. A keyway milling fixture according to claim 5, characterized in that: The tightening device is a hydraulic cylinder system, with the hydraulic rod pressing against the rear side of the adjusting block.

7. A keyway milling fixture according to claim 1, characterized in that: The machine tool is provided with a lower support plate that slides on it, and a first drive motor connected to the lower support plate is provided on the machine tool. An upper support plate is slidably mounted on the lower support plate.

8. A keyway milling fixture according to claim 7, characterized in that: The machine tool is equipped with a second drive motor that is connected to the upper support plate.

9. A keyway milling fixture according to claim 1, characterized in that: The main motor connected to the main drive shaft is provided on one side of the main spindle box.

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