Horizontal hard roll machine tool mounting tool rotary seat

Abstract

The utility model relates to the technical field of automobile parts processing, specifically a horizontal hard roll machine tool mounting tool rotary seat, including rotary seat inner core, rotary seat main part, small taper thrust bearing, dust cover, locking screw, rotary seat inner core installs inside the rotary seat main part, small taper thrust bearing is installed between rotary seat inner core and rotary seat main part, the top central of rotary seat inner core has the taper hole structure matched with the taper handle of small taper tool, locking screw passes through rotary seat inner core and is connected with the end of the taper handle of small taper tool after, the taper handle surface of small taper tool and the taper surface of taper hole structure are pasted together, compared with prior art, the top of rotary seat inner core has the taper hole structure matched with the taper handle of small taper tool, cooperates locking screw, small taper thrust bearing simultaneously, eliminates the gap, improves the installation accuracy of tool, increases the rigidity of tool in the processing process to improve the stability of tool in the processing process and the quality of parts.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing technology, specifically to a horizontal hard rolling machine tool tool mounting rotary seat. Background Technology

[0002] In the machining of steering gears, hard hobbing is one of the most important processes. Due to the increasing number of pinion product models and the need for some equipment to process high-precision products, the requirements for tool installation accuracy and rigidity have also increased. The tool installation accuracy of the hard hobbing machine determines the machining tooth profile accuracy.

[0003] In hard hobbing, the traditional tool mounting method is a straight shank key pin and deep groove ball bearing fit. As the module and tooth depth of the machined part increase, the cutting force during hard hobbing increases. The existing straight shank key pin mounting method may have a clearance of 0.003-0.004mm. Deep groove ball bearings have poor stability at high speeds and generate tool vibration during machining, leading to out-of-tolerance tool accuracy and consequently, out-of-tolerance tooth profile. When machining products with large depths of cut, the rotary table experiences tool deflection, failing to meet the machining requirements of high-precision products.

[0004] Therefore, it is necessary to design a horizontal hard rolling machine tool mounting swivel to improve tool mounting accuracy and increase tool rigidity during machining. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a horizontal hard rolling machine tool mounting rotary seat to improve tool mounting accuracy and increase tool rigidity during machining.

[0006] To achieve the above objectives, this utility model provides a rotary table for mounting tools on a horizontal hard rolling machine tool, comprising a rotary table inner core, a rotary table body, a small taper thrust bearing, a dust cover, and a locking screw. The rotary table inner core is installed inside the rotary table body, and a small taper thrust bearing is installed between the rotary table inner core and the rotary table body. The top of the rotary table inner core protrudes from the surface of the rotary table body, and a dust cover is installed on the outside of the top of the rotary table inner core. The top center of the rotary table inner core has a tapered hole structure that matches the taper shank of the small taper tool. After passing through the rotary table inner core, the locking screw connects to the end of the taper shank of the small taper tool, and the surface of the taper shank of the small taper tool fits against the tapered surface of the tapered hole structure.

[0007] The taper of the small taper thrust bearing is 10°~15°.

[0008] The taper of the shank of the small taper tool and the taper of the tapered hole structure are both 10°.

[0009] The locking screw is M6 and has a locking force of 40N.

[0010] The dust cover covers the top connection between the inner core of the rotary seat and the main body of the rotary seat.

[0011] Compared with the prior art, the top of the rotary seat inner core has a tapered hole structure that matches the tapered shank of the small taper tool. At the same time, it is equipped with a locking screw and a small taper thrust bearing to eliminate gaps, improve the installation accuracy of the tool, and increase the rigidity of the tool during the machining process, thereby improving the stability of the tool and the quality of the parts during the machining process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a cross-sectional view of the present invention.

[0014] Figure 3 This is a diagram showing the usage state of this utility model. Detailed Implementation

[0015] The present invention will now be further described with reference to the accompanying drawings.

[0016] See Figure 1 , Figure 2 This utility model relates to a rotary seat for mounting cutting tools on a horizontal hard rolling machine tool, comprising a rotary seat inner core 2, a rotary seat body 1, a small taper thrust bearing 3, a dust cover, and a locking screw. The rotary seat inner core 2 is installed inside the rotary seat body 1, and a small taper thrust bearing 3 is installed between the rotary seat inner core 2 and the rotary seat body 1. The top of the rotary seat inner core 2 protrudes from the surface of the rotary seat body 1, and a dust cover 4 is installed on the outside of the top of the rotary seat inner core 2. The top center of the rotary seat inner core 2 has a tapered hole structure 21 that matches the taper shank 61 of the small taper cutting tool 6. The locking screw 5 passes through the rotary seat inner core 2 and connects to the end of the taper shank 61 of the small taper cutting tool 6. The surface of the taper shank 61 of the small taper cutting tool 6 is in contact with the tapered surface of the tapered hole structure 21. Figure 3 As shown.

[0017] The dust cover 4 covers the top connection between the inner core 2 of the rotary seat and the main body 1 of the rotary seat to prevent dust and other impurities from entering the interior of the main body 1 of the rotary seat and causing the inner core 2 of the rotary seat to rotate unevenly.

[0018] Preferably, the taper of the small-tapered thrust bearing 3 is 10°~15°. The taper of the taper shank 61 of the small-tapered cutter 6 and the taper of the taper hole structure 21 are both 10°. The taper shank 61 of the small-tapered cutter 6 is inserted into the top taper hole structure 21 of the rotary seat inner core 2 and connected using an M6 locking screw 5 with a locking force of 40N. When the small-tapered cutter 6 rotates with the rotary seat inner core 2, the 10° taper fits snugly against the small-tapered thrust bearing 3, eliminating gaps and thus improving the rigidity of the small-tapered cutter 6 and the rotary seat mounting point. Testing shows that the static runout of the small-tapered cutter 6 is 0.001mm, and the dynamic accuracy is stable at 0.003mm.

[0019] Based on the comparison of the tooth profile reports of the machined parts, under the same tool parameters, compared with the traditional straight shank key pin rotary seat, the tooth profile report level of the machined parts of this utility model is improved by one level, and the tool life is doubled.

[0020] The rotary seat of this invention has a tapered hole structure at the top that matches the tapered shank of a small-tapered cutting tool. It is also equipped with a locking screw and a small-tapered thrust bearing to eliminate gaps, improve the installation accuracy of the cutting tool, and increase the rigidity of the cutting tool during the machining process, thereby improving the stability of the cutting tool and the quality of the parts during the machining process.

Claims

1. A rotary table for mounting tools on a horizontal hard rolling machine tool, comprising a rotary table inner core, a rotary table body, a small taper thrust bearing, a dust cover, and locking screws, characterized in that: The rotary seat inner core (2) is installed inside the rotary seat body (1). A small taper thrust bearing (3) is installed between the rotary seat inner core (2) and the rotary seat body (1). The top of the rotary seat inner core (2) protrudes from the surface of the rotary seat body (1). A dust cover (4) is installed on the outside of the top of the rotary seat inner core (2). The top center of the rotary seat inner core (2) has a tapered hole structure (21) that matches the tapered shank (61) of the small taper cutter (6). After the locking screw (5) passes through the rotary seat inner core (2), it is connected to the end of the tapered shank (61) of the small taper cutter (6). The surface of the tapered shank (61) of the small taper cutter (6) fits against the tapered surface of the tapered hole structure (21).

2. A tool mounting rotary seat for a horizontal hard rolling machine tool according to claim 1, characterized in that: The taper of the small taper thrust bearing (3) is 10°~15°.

3. A tool mounting rotary seat for a horizontal hard rolling machine according to claim 1, characterized in that: The taper of the taper shank (61) of the small taper tool (6) and the taper of the taper hole structure (21) are both 10°.

4. A tool mounting rotary seat for a horizontal hard rolling machine according to claim 1, characterized in that: The locking screw (5) is of specification M6 and has a locking force of 40N.

5. A tool mounting rotary seat for a horizontal hard rolling machine tool according to claim 1, characterized in that: The dust cover (4) covers the top connection between the inner core (2) of the rotary seat and the main body (1) of the rotary seat.

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